22145415512 has 32 divisors (see below), whose sum is σ = 45303494400. Its totient is φ = 10064752800.

The previous prime is 22145415503. The next prime is 22145415521. The reversal of 22145415512 is 21551454122.

It is an interprime number because it is at equal distance from previous prime (22145415503) and next prime (22145415521).

It is a congruent number.

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, 977837 + ... + 1000227.

It is an arithmetic number, because the mean of its divisors is an integer number (1415734200).

Almost surely, 2^22145415512 is an apocalyptic number.

22145415512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22145415512 is an abundant number, since it is smaller than the sum of its proper divisors (23158078888).

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

22145415512 is a wasteful number, since it uses less digits than its factorization.

22145415512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33647 (or 33643 counting only the distinct ones).

The product of its digits is 16000, while the sum is 32.

Adding to 22145415512 its reverse (21551454122), we get a palindrome (43696869634).

The spelling of 22145415512 in words is "twenty-two billion, one hundred forty-five million, four hundred fifteen thousand, five hundred twelve".