20151003211320 has 128 divisors (see below), whose sum is σ = 61599742928640. Its totient is φ = 5272308096000.

The previous prime is 20151003211307. The next prime is 20151003211321. The reversal of 20151003211320 is 2311230015102.

It is a super-2 number, since 2×20151003211320² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151003211321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2974677 + ... + 7010756.

It is an arithmetic number, because the mean of its divisors is an integer number (481247991630).

Almost surely, 2^{20151003211320} is an apocalyptic number.

20151003211320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20151003211320 is an abundant number, since it is smaller than the sum of its proper divisors (41448739717320).

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

20151003211320 is a wasteful number, since it uses less digits than its factorization.

20151003211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9985765 (or 9985761 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 20151003211320 its reverse (2311230015102), we get a palindrome (22462233226422).

The spelling of 20151003211320 in words is "twenty trillion, one hundred fifty-one billion, three million, two hundred eleven thousand, three hundred twenty".