20112315252 has 48 divisors (see below), whose sum is σ = 49591026240. Its totient is φ = 6326525952.

The previous prime is 20112315221. The next prime is 20112315257. The reversal of 20112315252 is 25251321102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112315257) 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, 113023 + ... + 230214.

It is an arithmetic number, because the mean of its divisors is an integer number (1033146380).

Almost surely, 2^20112315252 is an apocalyptic number.

It is an amenable number.

20112315252 is an abundant number, since it is smaller than the sum of its proper divisors (29478710988).

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

20112315252 is a wasteful number, since it uses less digits than its factorization.

20112315252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343520 (or 343518 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20112315252 its reverse (25251321102), we get a palindrome (45363636354).

The spelling of 20112315252 in words is "twenty billion, one hundred twelve million, three hundred fifteen thousand, two hundred fifty-two".