221102102120102 has 64 divisors (see below), whose sum is σ = 395705095188480. Its totient is φ = 90662933750400.

The previous prime is 221102102120093. The next prime is 221102102120113. The reversal of 221102102120102 is 201021201201122.

It is a super-2 number, since 2×221102102120102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16738793 + ... + 26877339.

It is an arithmetic number, because the mean of its divisors is an integer number (6182892112320).

Almost surely, 2^{221102102120102} is an apocalyptic number.

221102102120102 is a deficient number, since it is larger than the sum of its proper divisors (174602993068378).

221102102120102 is a wasteful number, since it uses less digits than its factorization.

221102102120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10139157.

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

Adding to 221102102120102 its reverse (201021201201122), we get a palindrome (422123303321224).

The spelling of 221102102120102 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred two million, one hundred twenty thousand, one hundred two".