152312223311221 has 16 divisors (see below), whose sum is σ = 153411369703168. Its totient is φ = 151214759280000.

The previous prime is 152312223311191. The next prime is 152312223311231. The reversal of 152312223311221 is 122113322213251.

It is a cyclic number.

It is not a de Polignac number, because 152312223311221 - 2²³ = 152312214922613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152312223311231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995421721 + ... + 995574721.

It is an arithmetic number, because the mean of its divisors is an integer number (9588210606448).

Almost surely, 2^{152312223311221} is an apocalyptic number.

It is an amenable number.

152312223311221 is a deficient number, since it is larger than the sum of its proper divisors (1099146391947).

152312223311221 is a wasteful number, since it uses less digits than its factorization.

152312223311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158452.

The product of its digits is 8640, while the sum is 31.

Adding to 152312223311221 its reverse (122113322213251), we get a palindrome (274425545524472).

The spelling of 152312223311221 in words is "one hundred fifty-two trillion, three hundred twelve billion, two hundred twenty-three million, three hundred eleven thousand, two hundred twenty-one".