211231113021000 has 96 divisors (see below), whose sum is σ = 713961162041400. Its totient is φ = 56328296803200.

The previous prime is 211231113020981. The next prime is 211231113021001. The reversal of 211231113021000 is 120311132112.

211231113021000 is a `hidden beast` number, since 2 + 1 + 12 + 311 + 130 + 210 + 0 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 61648282096164 + 149582830924836 = 7851642^2 + 12230406^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (211231113021001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11735052835 + ... + 11735070834.

Almost surely, 2^{211231113021000} is an apocalyptic number.

211231113021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211231113021000 is an abundant number, since it is smaller than the sum of its proper divisors (502730049020400).

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

211231113021000 is a wasteful number, since it uses less digits than its factorization.

211231113021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23470123696 (or 23470123679 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 211231113021000 its reverse (120311132112), we get a palindrome (211351424153112).

The spelling of 211231113021000 in words is "two hundred eleven trillion, two hundred thirty-one billion, one hundred thirteen million, twenty-one thousand".