202001220202120 has 32 divisors (see below), whose sum is σ = 465588178274520. Its totient is φ = 78829744468480.

The previous prime is 202001220202043. The next prime is 202001220202123. The reversal of 202001220202120 is 21202022100202.

It can be written as a sum of positive squares in 4 ways, for example, as 73352407418404 + 128648812783716 = 8564602^2 + 11342346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202001220202094 and 202001220202103.

It is not an unprimeable number, because it can be changed into a prime (202001220202123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61585736227 + ... + 61585739506.

Almost surely, 2^{202001220202120} is an apocalyptic number.

202001220202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202001220202120 is an abundant number, since it is smaller than the sum of its proper divisors (263586958072400).

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

202001220202120 is a wasteful number, since it uses less digits than its factorization.

202001220202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123171475785 (or 123171475781 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202001220202120 its reverse (21202022100202), we get a palindrome (223203242302322).

The spelling of 202001220202120 in words is "two hundred two trillion, one billion, two hundred twenty million, two hundred two thousand, one hundred twenty".