21020202100110 has 16 divisors (see below), whose sum is σ = 50448485040336. Its totient is φ = 5605387226688.

The previous prime is 21020202100103. The next prime is 21020202100129. The reversal of 21020202100110 is 1100120202012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350336701639 + ... + 350336701698.

It is an arithmetic number, because the mean of its divisors is an integer number (3153030315021).

Almost surely, 2^{21020202100110} is an apocalyptic number.

21020202100110 is an abundant number, since it is smaller than the sum of its proper divisors (29428282940226).

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

21020202100110 is a wasteful number, since it uses less digits than its factorization.

21020202100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700673403347.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21020202100110 its reverse (1100120202012), we get a palindrome (22120322302122).

The spelling of 21020202100110 in words is "twenty-one trillion, twenty billion, two hundred two million, one hundred thousand, one hundred ten".