155512032222 has 16 divisors (see below), whose sum is σ = 312314623632. Its totient is φ = 51622250880.

The previous prime is 155512032209. The next prime is 155512032233. The reversal of 155512032222 is 222230215551.

It is a self number, because there is not a number n which added to its sum of digits gives 155512032222.

It is a congruent number.

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, 53771733 + ... + 53774624.

It is an arithmetic number, because the mean of its divisors is an integer number (19519663977).

Almost surely, 2^155512032222 is an apocalyptic number.

155512032222 is an abundant number, since it is smaller than the sum of its proper divisors (156802591410).

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

155512032222 is a wasteful number, since it uses less digits than its factorization.

155512032222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107546603.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 155512032222 its reverse (222230215551), we get a palindrome (377742247773).

The spelling of 155512032222 in words is "one hundred fifty-five billion, five hundred twelve million, thirty-two thousand, two hundred twenty-two".