221938099706004 has 36 divisors (see below), whose sum is σ = 569213142775872. Its totient is φ = 67253969607440.

The previous prime is 221938099705967. The next prime is 221938099706021. The reversal of 221938099706004 is 400607990839122.

It is a super-2 number, since 2×221938099706004² (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 11 ways as a sum of consecutive naturals, for example, 76424964012 + ... + 76424966915.

Almost surely, 2^{221938099706004} is an apocalyptic number.

It is an amenable number.

221938099706004 is an abundant number, since it is smaller than the sum of its proper divisors (347275043069868).

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

221938099706004 is a wasteful number, since it uses less digits than its factorization.

221938099706004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152849930956 (or 152849930943 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 60.

It can be divided in two parts, 22193809 and 9706004, that added together give a palindrome (31899813).

The spelling of 221938099706004 in words is "two hundred twenty-one trillion, nine hundred thirty-eight billion, ninety-nine million, seven hundred six thousand, four".