22011232155 has 32 divisors (see below), whose sum is σ = 38618726400. Its totient is φ = 10616801280.

The previous prime is 22011232121. The next prime is 22011232169. The reversal of 22011232155 is 55123211022.

It is not a de Polignac number, because 22011232155 - 2⁷ = 22011232027 is a prime.

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, 313755 + ... + 377444.

It is an arithmetic number, because the mean of its divisors is an integer number (1206835200).

Almost surely, 2^22011232155 is an apocalyptic number.

22011232155 is a deficient number, since it is larger than the sum of its proper divisors (16607494245).

22011232155 is a wasteful number, since it uses less digits than its factorization.

22011232155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691411.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 22011232155 its reverse (55123211022), we get a palindrome (77134443177).

The spelling of 22011232155 in words is "twenty-two billion, eleven million, two hundred thirty-two thousand, one hundred fifty-five".