Search a number
-
+
20010211012 = 221117181147799
BaseRepresentation
bin10010101000101100…
…111001011011000100
31220122112202001010101
4102220230321123010
5311440103223022
613105332133444
71305604662421
oct225054713304
956575661111
1020010211012
118539273780
123a65467284
131b6b84155c
14d7b7c2d48
157c1ad6627
hex4a8b396c4

20010211012 has 48 divisors (see below), whose sum is σ = 40672195200. Its totient is φ = 8513164800.

The previous prime is 20010210971. The next prime is 20010211027. The reversal of 20010211012 is 21011201002.

It is a self number, because there is not a number n which added to its sum of digits gives 20010211012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61489 + ... + 209287.

It is an arithmetic number, because the mean of its divisors is an integer number (847337400).

Almost surely, 220010211012 is an apocalyptic number.

20010211012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20010211012 is an abundant number, since it is smaller than the sum of its proper divisors (20661984188).

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

20010211012 is a wasteful number, since it uses less digits than its factorization.

20010211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148012 (or 148010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010211012 its reverse (21011201002), we get a palindrome (41021412014).

The spelling of 20010211012 in words is "twenty billion, ten million, two hundred eleven thousand, twelve".

Divisors: 1 2 4 11 17 22 34 44 68 181 187 362 374 724 748 1991 3077 3982 6154 7964 12308 33847 67694 135388 147799 295598 591196 1625789 2512583 3251578 5025166 6503156 10050332 26751619 27638413 53503238 55276826 107006476 110553652 294267809 454777523 588535618 909555046 1177071236 1819110092 5002552753 10005105506 20010211012