21210221111094 has 24 divisors (see below), whose sum is σ = 45955609263720. Its totient is φ = 7070053674528.

The previous prime is 21210221111047. The next prime is 21210221111099. The reversal of 21210221111094 is 49011112201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210221111099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5753269 + ... + 8690255.

It is an arithmetic number, because the mean of its divisors is an integer number (1914817052655).

Almost surely, 2^{21210221111094} is an apocalyptic number.

21210221111094 is an abundant number, since it is smaller than the sum of its proper divisors (24745388152626).

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

21210221111094 is a wasteful number, since it uses less digits than its factorization.

21210221111094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338204 (or 3338201 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 21210221111094 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-one million, one hundred eleven thousand, ninety-four".