22155512013 has 16 divisors (see below), whose sum is σ = 34250067840. Its totient is φ = 14128152192.

The previous prime is 22155512003. The next prime is 22155512053. The reversal of 22155512013 is 31021555122.

It is not a de Polignac number, because 22155512013 - 2⁶ = 22155511949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155512003) 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, 17837956 + ... + 17839197.

It is an arithmetic number, because the mean of its divisors is an integer number (2140629240).

Almost surely, 2^22155512013 is an apocalyptic number.

22155512013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22155512013 is a deficient number, since it is larger than the sum of its proper divisors (12094555827).

22155512013 is a wasteful number, since it uses less digits than its factorization.

22155512013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35677185 (or 35677179 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 22155512013 in words is "twenty-two billion, one hundred fifty-five million, five hundred twelve thousand, thirteen".