22001501512 has 16 divisors (see below), whose sum is σ = 42367756860. Its totient is φ = 10703433024.

The previous prime is 22001501477. The next prime is 22001501519. The reversal of 22001501512 is 21510510022.

It can be written as a sum of positive squares in 2 ways, for example, as 20029608676 + 1971892836 = 141526^2 + 44406^2 .

It is a super-2 number, since 2×22001501512² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22001501512.

It is not an unprimeable number, because it can be changed into a prime (22001501519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37164403 + ... + 37164994.

Almost surely, 2^22001501512 is an apocalyptic number.

It is an amenable number.

22001501512 is a deficient number, since it is larger than the sum of its proper divisors (20366255348).

22001501512 is a wasteful number, since it uses less digits than its factorization.

22001501512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74329440 (or 74329436 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The spelling of 22001501512 in words is "twenty-two billion, one million, five hundred one thousand, five hundred twelve".