221004214122 has 16 divisors (see below), whose sum is σ = 442385904672. Its totient is φ = 73605158640.

The previous prime is 221004214103. The next prime is 221004214139. The reversal of 221004214122 is 221412400122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15720573 + ... + 15734624.

It is an arithmetic number, because the mean of its divisors is an integer number (27649119042).

Almost surely, 2^221004214122 is an apocalyptic number.

221004214122 is an abundant number, since it is smaller than the sum of its proper divisors (221381690550).

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

221004214122 is a wasteful number, since it uses less digits than its factorization.

221004214122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31456373.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221004214122 its reverse (221412400122), we get a palindrome (442416614244).

The spelling of 221004214122 in words is "two hundred twenty-one billion, four million, two hundred fourteen thousand, one hundred twenty-two".