202012121020120 has 32 divisors (see below), whose sum is σ = 481264170667200. Its totient is φ = 76051622030848.

The previous prime is 202012121020109. The next prime is 202012121020187. The reversal of 202012121020120 is 21020121210202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202012121020094 and 202012121020103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148538323600 + ... + 148538324959.

It is an arithmetic number, because the mean of its divisors is an integer number (15039505333350).

Almost surely, 2^{202012121020120} is an apocalyptic number.

202012121020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202012121020120 is an abundant number, since it is smaller than the sum of its proper divisors (279252049647080).

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

202012121020120 is a wasteful number, since it uses less digits than its factorization.

202012121020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297076648587 (or 297076648583 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202012121020120 its reverse (21020121210202), we get a palindrome (223032242230322).

The spelling of 202012121020120 in words is "two hundred two trillion, twelve billion, one hundred twenty-one million, twenty thousand, one hundred twenty".