221211122102 has 32 divisors (see below), whose sum is σ = 354757294080. Its totient is φ = 103196188480.

The previous prime is 221211122089. The next prime is 221211122131. The reversal of 221211122102 is 201221112122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14859899 + ... + 14874777.

It is an arithmetic number, because the mean of its divisors is an integer number (11086165440).

Almost surely, 2^221211122102 is an apocalyptic number.

221211122102 is a deficient number, since it is larger than the sum of its proper divisors (133546171978).

221211122102 is a wasteful number, since it uses less digits than its factorization.

221211122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22828.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221211122102 its reverse (201221112122), we get a palindrome (422432234224).

The spelling of 221211122102 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred two".