21114031100 has 72 divisors (see below), whose sum is σ = 46057135488. Its totient is φ = 8401579200.

The previous prime is 21114031069. The next prime is 21114031121. The reversal of 21114031100 is 113041112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23911259 + ... + 23912141.

Almost surely, 2^21114031100 is an apocalyptic number.

21114031100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21114031100 is an abundant number, since it is smaller than the sum of its proper divisors (24943104388).

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

21114031100 is a wasteful number, since it uses less digits than its factorization.

21114031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21114031100 its reverse (113041112), we get a palindrome (21227072212).

The spelling of 21114031100 in words is "twenty-one billion, one hundred fourteen million, thirty-one thousand, one hundred".