2120202102020 has 48 divisors (see below), whose sum is σ = 4501638732528. Its totient is φ = 838725849600.

The previous prime is 2120202101999. The next prime is 2120202102079. The reversal of 2120202102020 is 202012020212.

It can be written as a sum of positive squares in 8 ways, for example, as 143180505664 + 1977021596356 = 378392^2 + 1406066^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120202101986 and 2120202102004.

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, 1173134 + ... + 2369946.

It is an arithmetic number, because the mean of its divisors is an integer number (93784140261).

Almost surely, 2^{2120202102020} is an apocalyptic number.

2120202102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120202102020 is an abundant number, since it is smaller than the sum of its proper divisors (2381436630508).

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

2120202102020 is a wasteful number, since it uses less digits than its factorization.

2120202102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197800 (or 1197798 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2120202102020 its reverse (202012020212), we get a palindrome (2322214122232).

It can be divided in two parts, 2120202 and 102020, that added together give a palindrome (2222222).

The spelling of 2120202102020 in words is "two trillion, one hundred twenty billion, two hundred two million, one hundred two thousand, twenty".