21110010010100 has 72 divisors (see below), whose sum is σ = 50467934907936. Its totient is φ = 7600363600000.

The previous prime is 21110010010051. The next prime is 21110010010127. The reversal of 21110010010100 is 101001001112.

It is a happy number.

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, 94893446 + ... + 95115645.

It is an arithmetic number, because the mean of its divisors is an integer number (700943540388).

Almost surely, 2^{21110010010100} is an apocalyptic number.

21110010010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110010010100 is an abundant number, since it is smaller than the sum of its proper divisors (29357924897836).

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

21110010010100 is a wasteful number, since it uses less digits than its factorization.

21110010010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190009217 (or 190009210 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 21110010010100 its reverse (101001001112), we get a palindrome (21211011011212).

The spelling of 21110010010100 in words is "twenty-one trillion, one hundred ten billion, ten million, ten thousand, one hundred".