221111000202102 has 8 divisors (see below), whose sum is σ = 442222000404216. Its totient is φ = 73703666734032.

The previous prime is 221111000202097. The next prime is 221111000202143. The reversal of 221111000202102 is 201202000111122.

It is a sphenic number, since it is the product of 3 distinct primes.

221111000202102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18425916683503 + ... + 18425916683514.

It is an arithmetic number, because the mean of its divisors is an integer number (55277750050527).

Almost surely, 2^{221111000202102} is an apocalyptic number.

221111000202102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221111000202102 is a wasteful number, since it uses less digits than its factorization.

221111000202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36851833367022.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221111000202102 its reverse (201202000111122), we get a palindrome (422313000313224).

The spelling of 221111000202102 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred two thousand, one hundred two".