20210120120200 has 48 divisors (see below), whose sum is σ = 48608823406500. Its totient is φ = 7805287768320.

The previous prime is 20210120120149. The next prime is 20210120120209. The reversal of 20210120120200 is 202102101202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6532859954916 + 13677260165284 = 2555946^2 + 3698278^2 .

It is not an unprimeable number, because it can be changed into a prime (20210120120209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1742245935 + ... + 1742257534.

Almost surely, 2^{20210120120200} is an apocalyptic number.

20210120120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210120120200 is an abundant number, since it is smaller than the sum of its proper divisors (28398703286300).

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

20210120120200 is a wasteful number, since it uses less digits than its factorization.

20210120120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484503514 (or 3484503505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20210120120200 its reverse (202102101202), we get a palindrome (20412222221402).

The spelling of 20210120120200 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, one hundred twenty thousand, two hundred".