22012515145 has 8 divisors (see below), whose sum is σ = 26427797640. Its totient is φ = 17601492480.

The previous prime is 22012515101. The next prime is 22012515169. The reversal of 22012515145 is 54151521022.

It can be written as a sum of positive squares in 4 ways, for example, as 4231892809 + 17780622336 = 65053^2 + 133344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22012515145 - 2⁹ = 22012514633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1053576 + ... + 1074265.

It is an arithmetic number, because the mean of its divisors is an integer number (3303474705).

Almost surely, 2^22012515145 is an apocalyptic number.

It is an amenable number.

22012515145 is a deficient number, since it is larger than the sum of its proper divisors (4415282495).

22012515145 is a wasteful number, since it uses less digits than its factorization.

22012515145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129915.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 22012515145 in words is "twenty-two billion, twelve million, five hundred fifteen thousand, one hundred forty-five".