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12213200310020 = 2251973099797033
BaseRepresentation
bin1011000110111001101101…
…1101110100111100000100
31121020120101221002000102222
42301232123131310330010
53100100113234410040
641550400004351512
72400242326522253
oct261563335647404
947216357060388
1012213200310020
1139896531a5326
1214530000a5598
136a7913745b98
1430319cc8c79a
15162a601b2bb5
hexb1b9b774f04

12213200310020 has 24 divisors (see below), whose sum is σ = 25777912134744. Its totient is φ = 4860481746176.

The previous prime is 12213200310011. The next prime is 12213200310037. The reversal of 12213200310020 is 2001300231221.

It can be written as a sum of positive squares in 4 ways, for example, as 1293665111236 + 10919535198784 = 1137394^2 + 3304472^2 .

It is a super-2 number, since 2×122132003100202 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1549894577 + ... + 1549902456.

It is an arithmetic number, because the mean of its divisors is an integer number (1074079672281).

Almost surely, 212213200310020 is an apocalyptic number.

12213200310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213200310020 is an abundant number, since it is smaller than the sum of its proper divisors (13564711824724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12213200310020 is a wasteful number, since it uses less digits than its factorization.

12213200310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099797239 (or 3099797237 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12213200310020 its reverse (2001300231221), we get a palindrome (14214500541241).

The spelling of 12213200310020 in words is "twelve trillion, two hundred thirteen billion, two hundred million, three hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 20 197 394 788 985 1970 3940 3099797033 6199594066 12399188132 15498985165 30997970330 61995940660 610660015501 1221320031002 2442640062004 3053300077505 6106600155010 12213200310020