21168227623026 has 128 divisors (see below), whose sum is σ = 49103685734400. Its totient is φ = 6012399810560.

The previous prime is 21168227623021. The next prime is 21168227623079. The reversal of 21168227623026 is 62032672286112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21168227623021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1097415190 + ... + 1097434478.

It is an arithmetic number, because the mean of its divisors is an integer number (383622544800).

Almost surely, 2^{21168227623026} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21168227623026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24551842867200).

21168227623026 is an abundant number, since it is smaller than the sum of its proper divisors (27935458111374).

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

21168227623026 is a wasteful number, since it uses less digits than its factorization.

21168227623026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23304.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 21168227623026 in words is "twenty-one trillion, one hundred sixty-eight billion, two hundred twenty-seven million, six hundred twenty-three thousand, twenty-six".