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12213300220 = 2251155515001
BaseRepresentation
bin10110101111111100…
…00010101111111100
31011112011110221020121
423113332002233330
5200003101101340
65335525224324
7611441224162
oct132776025774
934464427217
1012213300220
1151a80a9250
12244a2620a4
1311c83c7884
1483c0a3232
154b735594a
hex2d7f82bfc

12213300220 has 24 divisors (see below), whose sum is σ = 27979561008. Its totient is φ = 4441200000.

The previous prime is 12213300217. The next prime is 12213300227. The reversal of 12213300220 is 2200331221.

It is a junction number, because it is equal to n+sod(n) for n = 12213300194 and 12213300203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213300227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27757281 + ... + 27757720.

It is an arithmetic number, because the mean of its divisors is an integer number (1165815042).

Almost surely, 212213300220 is an apocalyptic number.

12213300220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213300220 is an abundant number, since it is smaller than the sum of its proper divisors (15766260788).

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

12213300220 is a wasteful number, since it uses less digits than its factorization.

12213300220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55515021 (or 55515019 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12213300220 its reverse (2200331221), we get a palindrome (14413631441).

The spelling of 12213300220 in words is "twelve billion, two hundred thirteen million, three hundred thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 55515001 111030002 222060004 277575005 555150010 610665011 1110300020 1221330022 2442660044 3053325055 6106650110 12213300220