156021450222 has 64 divisors (see below), whose sum is σ = 376105711104. Its totient is φ = 42563389440.

The previous prime is 156021450173. The next prime is 156021450271. The reversal of 156021450222 is 222054120651.

It is an interprime number because it is at equal distance from previous prime (156021450173) and next prime (156021450271).

It is a self number, because there is not a number n which added to its sum of digits gives 156021450222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2997163 + ... + 3048774.

It is an arithmetic number, because the mean of its divisors is an integer number (5876651736).

Almost surely, 2^156021450222 is an apocalyptic number.

156021450222 is an abundant number, since it is smaller than the sum of its proper divisors (220084260882).

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

156021450222 is a wasteful number, since it uses less digits than its factorization.

156021450222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045993.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 156021450222 its reverse (222054120651), we get a palindrome (378075570873).

The spelling of 156021450222 in words is "one hundred fifty-six billion, twenty-one million, four hundred fifty thousand, two hundred twenty-two".