21030044010100 has 72 divisors (see below), whose sum is σ = 46762939792800. Its totient is φ = 8206315228800.

The previous prime is 21030044010097. The next prime is 21030044010113. The reversal of 21030044010100 is 101044003012.

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, 12831735 + ... + 14377534.

It is an arithmetic number, because the mean of its divisors is an integer number (649485274900).

Almost surely, 2^{21030044010100} is an apocalyptic number.

21030044010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030044010100 is an abundant number, since it is smaller than the sum of its proper divisors (25732895782700).

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

21030044010100 is a wasteful number, since it uses less digits than its factorization.

21030044010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27209473 (or 27209466 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21030044010100 its reverse (101044003012), we get a palindrome (21131088013112).

The spelling of 21030044010100 in words is "twenty-one trillion, thirty billion, forty-four million, ten thousand, one hundred".