12998022345 has 128 divisors (see below), whose sum is σ = 28910407680. Its totient is φ = 5382858240.

The previous prime is 12998022287. The next prime is 12998022347. The reversal of 12998022345 is 54322089921.

It is not a de Polignac number, because 12998022345 - 2⁶ = 12998022281 is a prime.

It is a super-2 number, since 2×12998022345² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12998022345.

It is not an unprimeable number, because it can be changed into a prime (12998022347) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3189229 + ... + 3193301.

It is an arithmetic number, because the mean of its divisors is an integer number (225862560).

Almost surely, 2^12998022345 is an apocalyptic number.

12998022345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12998022345 is an abundant number, since it is smaller than the sum of its proper divisors (15912385335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12998022345 is a wasteful number, since it uses less digits than its factorization.

12998022345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412 (or 4406 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 12998022345 in words is "twelve billion, nine hundred ninety-eight million, twenty-two thousand, three hundred forty-five".