22712198450 has 18 divisors (see below), whose sum is σ = 42246671319. Its totient is φ = 9084453120.

The previous prime is 22712198417. The next prime is 22712198507. The reversal of 22712198450 is 5489121722.

It can be written as a sum of positive squares in 5 ways, for example, as 3402038929 + 19310159521 = 58327^2 + 138961^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106565.

It is a super-3 number, since 3×22712198450³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22712198398 and 22712198407.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1054994 + ... + 1076306.

Almost surely, 2^22712198450 is an apocalyptic number.

22712198450 is a deficient number, since it is larger than the sum of its proper divisors (19534472869).

22712198450 is an frugal number, since it uses more digits than its factorization.

22712198450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42638 (or 21320 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 22712198450 in words is "twenty-two billion, seven hundred twelve million, one hundred ninety-eight thousand, four hundred fifty".