21101021000122 has 32 divisors (see below), whose sum is σ = 38077779801600. Its totient is φ = 8567163214128.

The previous prime is 21101021000107. The next prime is 21101021000167. The reversal of 21101021000122 is 22100012010112.

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, 13231653 + ... + 14740375.

It is an arithmetic number, because the mean of its divisors is an integer number (1189930618800).

Almost surely, 2^{21101021000122} is an apocalyptic number.

21101021000122 is a deficient number, since it is larger than the sum of its proper divisors (16976758801478).

21101021000122 is a wasteful number, since it uses less digits than its factorization.

21101021000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561330.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21101021000122 its reverse (22100012010112), we get a palindrome (43201033010234).

The spelling of 21101021000122 in words is "twenty-one trillion, one hundred one billion, twenty-one million, one hundred twenty-two", and thus it is an aban number.