2155632411222 has 96 divisors (see below), whose sum is σ = 4994762572800. Its totient is φ = 670426263936.

The previous prime is 2155632411157. The next prime is 2155632411239. The reversal of 2155632411222 is 2221142365512.

2155632411222 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 632 + 4 + 1 + 12 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2317554 + ... + 3111642.

It is an arithmetic number, because the mean of its divisors is an integer number (52028776800).

Almost surely, 2^{2155632411222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155632411222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2497381286400).

2155632411222 is an abundant number, since it is smaller than the sum of its proper divisors (2839130161578).

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

2155632411222 is a wasteful number, since it uses less digits than its factorization.

2155632411222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794282 (or 794279 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 2155632411222 its reverse (2221142365512), we get a palindrome (4376774776734).

The spelling of 2155632411222 in words is "two trillion, one hundred fifty-five billion, six hundred thirty-two million, four hundred eleven thousand, two hundred twenty-two".