21110110022010 has 32 divisors (see below), whose sum is σ = 51494825763072. Its totient is φ = 5537078038080.

The previous prime is 21110110021993. The next prime is 21110110022051. The reversal of 21110110022010 is 1022001101112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5767787794 + ... + 5767791453.

It is an arithmetic number, because the mean of its divisors is an integer number (1609213305096).

Almost surely, 2^{21110110022010} is an apocalyptic number.

21110110022010 is an abundant number, since it is smaller than the sum of its proper divisors (30384715741062).

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

21110110022010 is a wasteful number, since it uses less digits than its factorization.

21110110022010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11535579318.

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

Adding to 21110110022010 its reverse (1022001101112), we get a palindrome (22132111123122).

The spelling of 21110110022010 in words is "twenty-one trillion, one hundred ten billion, one hundred ten million, twenty-two thousand, ten".