2120021010020 has 48 divisors (see below), whose sum is σ = 4456888531200. Its totient is φ = 847086074880.

The previous prime is 2120021010017. The next prime is 2120021010049. The reversal of 2120021010020 is 200101200212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2120021009983 and 2120021010010.

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, 102698900 + ... + 102719540.

It is an arithmetic number, because the mean of its divisors is an integer number (92851844400).

Almost surely, 2^{2120021010020} is an apocalyptic number.

2120021010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120021010020 is an abundant number, since it is smaller than the sum of its proper divisors (2336867521180).

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

2120021010020 is a wasteful number, since it uses less digits than its factorization.

2120021010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25988 (or 25986 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2120021010020 its reverse (200101200212), we get a palindrome (2320122210232).

The spelling of 2120021010020 in words is "two trillion, one hundred twenty billion, twenty-one million, ten thousand, twenty".