10109202120 has 48 divisors (see below), whose sum is σ = 32854908060. Its totient is φ = 2695787136.

The previous prime is 10109202107. The next prime is 10109202127. The reversal of 10109202120 is 2120290101.

It can be written as a sum of positive squares in 2 ways, for example, as 9409388004 + 699814116 = 97002^2 + 26454^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10109202093 and 10109202102.

It is not an unprimeable number, because it can be changed into a prime (10109202127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14040199 + ... + 14040918.

Almost surely, 2^10109202120 is an apocalyptic number.

10109202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10109202120 is an abundant number, since it is smaller than the sum of its proper divisors (22745705940).

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

10109202120 is a wasteful number, since it uses less digits than its factorization.

10109202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28081134 (or 28081127 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 10109202120 its reverse (2120290101), we get a palindrome (12229492221).

The spelling of 10109202120 in words is "ten billion, one hundred nine million, two hundred two thousand, one hundred twenty".