221121040121102 has 32 divisors (see below), whose sum is σ = 380879636296320. Its totient is φ = 95219264236320.

The previous prime is 221121040121087. The next prime is 221121040121183. The reversal of 221121040121102 is 201121040121122.

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, 155206148 + ... + 156624360.

It is an arithmetic number, because the mean of its divisors is an integer number (11902488634260).

Almost surely, 2^{221121040121102} is an apocalyptic number.

221121040121102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221121040121102 is a deficient number, since it is larger than the sum of its proper divisors (159758596175218).

221121040121102 is a wasteful number, since it uses less digits than its factorization.

221121040121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791248.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221121040121102 its sum of digits (20), we get a palindrome (221121040121122).

Adding to 221121040121102 its reverse (201121040121122), we get a palindrome (422242080242224).

The spelling of 221121040121102 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, forty million, one hundred twenty-one thousand, one hundred two".