20102210210120 has 16 divisors (see below), whose sum is σ = 45229972972860. Its totient is φ = 8040884084032.

The previous prime is 20102210210111. The next prime is 20102210210213. The reversal of 20102210210120 is 2101201220102.

It can be written as a sum of positive squares in 2 ways, for example, as 19219403392036 + 882806818084 = 4383994^2 + 939578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102210210095 and 20102210210104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251277627587 + ... + 251277627666.

Almost surely, 2^{20102210210120} is an apocalyptic number.

20102210210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102210210120 is an abundant number, since it is smaller than the sum of its proper divisors (25127762762740).

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

20102210210120 is a wasteful number, since it uses less digits than its factorization.

20102210210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502555255264 (or 502555255260 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20102210210120 its reverse (2101201220102), we get a palindrome (22203411430222).

The spelling of 20102210210120 in words is "twenty trillion, one hundred two billion, two hundred ten million, two hundred ten thousand, one hundred twenty".