21101122110068 has 96 divisors (see below), whose sum is σ = 49582012999680. Its totient is φ = 7588546669440.

The previous prime is 21101122110067. The next prime is 21101122110119. The reversal of 21101122110068 is 86001122110112.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101122110067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139019105 + ... + 139170807.

It is an arithmetic number, because the mean of its divisors is an integer number (516479302080).

Almost surely, 2^{21101122110068} is an apocalyptic number.

21101122110068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21101122110068 is an abundant number, since it is smaller than the sum of its proper divisors (28480890889612).

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

21101122110068 is a wasteful number, since it uses less digits than its factorization.

21101122110068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186477 (or 186475 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 26.

The spelling of 21101122110068 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, one hundred ten thousand, sixty-eight".