2120202120020 has 12 divisors (see below), whose sum is σ = 4452424452084. Its totient is φ = 848080848000.

The previous prime is 2120202120019. The next prime is 2120202120067. The reversal of 2120202120020 is 200212020212.

It can be written as a sum of positive squares in 2 ways, for example, as 1194885099664 + 925317020356 = 1093108^2 + 961934^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120202119977 and 2120202120004.

It is a congruent number.

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, 53005052981 + ... + 53005053020.

It is an arithmetic number, because the mean of its divisors is an integer number (371035371007).

Almost surely, 2^{2120202120020} is an apocalyptic number.

2120202120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120202120020 is an abundant number, since it is smaller than the sum of its proper divisors (2332222332064).

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

2120202120020 is a wasteful number, since it uses less digits than its factorization.

2120202120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106010106010 (or 106010106008 counting only the distinct ones).

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

Adding to 2120202120020 its reverse (200212020212), we get a palindrome (2320414140232).

The spelling of 2120202120020 in words is "two trillion, one hundred twenty billion, two hundred two million, one hundred twenty thousand, twenty".