22155131015 has 32 divisors (see below), whose sum is σ = 28179074880. Its totient is φ = 16693254144.

The previous prime is 22155130997. The next prime is 22155131023. The reversal of 22155131015 is 51013155122.

It is a cyclic number.

It is not a de Polignac number, because 22155131015 - 2¹⁸ = 22154868871 is a prime.

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, 6089777 + ... + 6093413.

It is an arithmetic number, because the mean of its divisors is an integer number (880596090).

Almost surely, 2^22155131015 is an apocalyptic number.

22155131015 is a deficient number, since it is larger than the sum of its proper divisors (6023943865).

22155131015 is a wasteful number, since it uses less digits than its factorization.

22155131015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 22155131015 its reverse (51013155122), we get a palindrome (73168286137).

The spelling of 22155131015 in words is "twenty-two billion, one hundred fifty-five million, one hundred thirty-one thousand, fifteen".