2020102120 has 32 divisors (see below), whose sum is σ = 4549275720. Its totient is φ = 807321600.

The previous prime is 2020102109. The next prime is 2020102171. The reversal of 2020102120 is 212010202.

It can be written as a sum of positive squares in 4 ways, for example, as 1857437604 + 162664516 = 43098^2 + 12754^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2020102097 and 2020102106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24220 + ... + 68020.

Almost surely, 2^2020102120 is an apocalyptic number.

2020102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020102120 is an abundant number, since it is smaller than the sum of its proper divisors (2529173600).

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

2020102120 is a wasteful number, since it uses less digits than its factorization.

2020102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44965 (or 44961 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2020102120 is about 44945.5461642197. The cubic root of 2020102120 is about 1264.1281665824.

Adding to 2020102120 its reverse (212010202), we get a palindrome (2232112322).

The spelling of 2020102120 in words is "two billion, twenty million, one hundred two thousand, one hundred twenty".