20100210120 has 48 divisors (see below), whose sum is σ = 65325684060. Its totient is φ = 5360055936.

The previous prime is 20100210103. The next prime is 20100210127. The reversal of 20100210120 is 2101200102.

It can be written as a sum of positive squares in 2 ways, for example, as 19659965796 + 440244324 = 140214^2 + 20982^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20100210127) 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, 27916599 + ... + 27917318.

Almost surely, 2^20100210120 is an apocalyptic number.

20100210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100210120 is an abundant number, since it is smaller than the sum of its proper divisors (45225473940).

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

20100210120 is a wasteful number, since it uses less digits than its factorization.

20100210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55833934 (or 55833927 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20100210120 its reverse (2101200102), we get a palindrome (22201410222).

The spelling of 20100210120 in words is "twenty billion, one hundred million, two hundred ten thousand, one hundred twenty".