20512099224 has 96 divisors (see below), whose sum is σ = 59251299120. Its totient is φ = 6388144128.

The previous prime is 20512099217. The next prime is 20512099271. The reversal of 20512099224 is 42299021502.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106527 + ... + 228849.

Almost surely, 2^20512099224 is an apocalyptic number.

20512099224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20512099224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29625649560).

20512099224 is an abundant number, since it is smaller than the sum of its proper divisors (38739199896).

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

20512099224 is a wasteful number, since it uses less digits than its factorization.

20512099224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122489 (or 122482 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 20512099224 in words is "twenty billion, five hundred twelve million, ninety-nine thousand, two hundred twenty-four".