221211211102 has 16 divisors (see below), whose sum is σ = 379273415040. Its totient is φ = 94791255768.

The previous prime is 221211211093. The next prime is 221211211103. The reversal of 221211211102 is 201112112122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211211103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027308 + ... + 1223839.

It is an arithmetic number, because the mean of its divisors is an integer number (23704588440).

Almost surely, 2^221211211102 is an apocalyptic number.

221211211102 is a deficient number, since it is larger than the sum of its proper divisors (158062203938).

221211211102 is a wasteful number, since it uses less digits than its factorization.

221211211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258175.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221211211102 its reverse (201112112122), we get a palindrome (422323323224).

The spelling of 221211211102 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, one hundred two".