20102120232 has 64 divisors (see below), whose sum is σ = 53151283200. Its totient is φ = 6317922240.

The previous prime is 20102120209. The next prime is 20102120243. The reversal of 20102120232 is 23202120102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8248 + ... + 200679.

It is an arithmetic number, because the mean of its divisors is an integer number (830488800).

Almost surely, 2^20102120232 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 20102120232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26575641600).

20102120232 is an abundant number, since it is smaller than the sum of its proper divisors (33049162968).

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

20102120232 is a wasteful number, since it uses less digits than its factorization.

20102120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209166 (or 209162 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20102120232 its reverse (23202120102), we get a palindrome (43304240334).

The spelling of 20102120232 in words is "twenty billion, one hundred two million, one hundred twenty thousand, two hundred thirty-two".