21021110200110 has 16 divisors (see below), whose sum is σ = 50450664480336. Its totient is φ = 5605629386688.

The previous prime is 21021110200109. The next prime is 21021110200133. The reversal of 21021110200110 is 1100201112012.

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, 350351836639 + ... + 350351836698.

It is an arithmetic number, because the mean of its divisors is an integer number (3153166530021).

Almost surely, 2^{21021110200110} is an apocalyptic number.

21021110200110 is an abundant number, since it is smaller than the sum of its proper divisors (29429554280226).

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

21021110200110 is a wasteful number, since it uses less digits than its factorization.

21021110200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700703673347.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21021110200110 its reverse (1100201112012), we get a palindrome (22121311312122).

The spelling of 21021110200110 in words is "twenty-one trillion, twenty-one billion, one hundred ten million, two hundred thousand, one hundred ten".