20112202552 has 64 divisors (see below), whose sum is σ = 41246765280. Its totient is φ = 9137774592.

The previous prime is 20112202549. The next prime is 20112202553. The reversal of 20112202552 is 25520221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112202553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4454248 + ... + 4458760.

Almost surely, 2^20112202552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112202552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20623382640).

20112202552 is an abundant number, since it is smaller than the sum of its proper divisors (21134562728).

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

20112202552 is a wasteful number, since it uses less digits than its factorization.

20112202552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192 (or 5188 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 20112202552 its reverse (25520221102), we get a palindrome (45632423654).

The spelling of 20112202552 in words is "twenty billion, one hundred twelve million, two hundred two thousand, five hundred fifty-two".