20101232120 has 32 divisors (see below), whose sum is σ = 45573034320. Its totient is φ = 7979112960.

The previous prime is 20101232087. The next prime is 20101232131. The reversal of 20101232120 is 2123210102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20101232095 and 20101232104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1912817 + ... + 1923296.

Almost surely, 2^20101232120 is an apocalyptic number.

20101232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101232120 is an abundant number, since it is smaller than the sum of its proper divisors (25471802200).

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

20101232120 is a wasteful number, since it uses less digits than its factorization.

20101232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836255 (or 3836251 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20101232120 its reverse (2123210102), we get a palindrome (22224442222).

The spelling of 20101232120 in words is "twenty billion, one hundred one million, two hundred thirty-two thousand, one hundred twenty".