21110231131000 has 64 divisors (see below), whose sum is σ = 53888662769760. Its totient is φ = 7676447680000.

The previous prime is 21110231130977. The next prime is 21110231131021. The reversal of 21110231131000 is 13113201112.

It is a happy number.

It is a super-2 number, since 2×21110231131000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 959544961 + ... + 959566960.

Almost surely, 2^{21110231131000} is an apocalyptic number.

21110231131000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110231131000 is an abundant number, since it is smaller than the sum of its proper divisors (32778431638760).

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

21110231131000 is a wasteful number, since it uses less digits than its factorization.

21110231131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919111953 (or 1919111939 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21110231131000 its reverse (13113201112), we get a palindrome (21123344332112).

The spelling of 21110231131000 in words is "twenty-one trillion, one hundred ten billion, two hundred thirty-one million, one hundred thirty-one thousand".