221304154122 has 12 divisors (see below), whose sum is σ = 479492333970. Its totient is φ = 73768051368.

The previous prime is 221304154117. The next prime is 221304154147. The reversal of 221304154122 is 221451403122.

221304154122 is a `hidden beast` number, since 221 + 3 + 0 + 415 + 4 + 1 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 193468902201 + 27835251921 = 439851^2 + 166839^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6147337597 + ... + 6147337632.

Almost surely, 2^221304154122 is an apocalyptic number.

221304154122 is an abundant number, since it is smaller than the sum of its proper divisors (258188179848).

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

221304154122 is a wasteful number, since it uses less digits than its factorization.

221304154122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12294675237 (or 12294675234 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 221304154122 its reverse (221451403122), we get a palindrome (442755557244).

The spelling of 221304154122 in words is "two hundred twenty-one billion, three hundred four million, one hundred fifty-four thousand, one hundred twenty-two".