221111000202101 has 32 divisors (see below), whose sum is σ = 236253441312000. Its totient is φ = 206211734249472.

The previous prime is 221111000202097. The next prime is 221111000202143. The reversal of 221111000202101 is 101202000111122.

It is a cyclic number.

It is not a de Polignac number, because 221111000202101 - 2² = 221111000202097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111000201101) 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, 15003792605 + ... + 15003807341.

It is an arithmetic number, because the mean of its divisors is an integer number (7382920041000).

Almost surely, 2^{221111000202101} is an apocalyptic number.

It is an amenable number.

221111000202101 is a deficient number, since it is larger than the sum of its proper divisors (15142441109899).

221111000202101 is a wasteful number, since it uses less digits than its factorization.

221111000202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26621.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221111000202101 its reverse (101202000111122), we get a palindrome (322313000313223).

The spelling of 221111000202101 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred two thousand, one hundred one".