120020200200121 has 12 divisors (see below), whose sum is σ = 129963398674860. Its totient is φ = 110787283214400.

The previous prime is 120020200200119. The next prime is 120020200200127. The reversal of 120020200200121 is 121002002020021.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 82810200200121 + 37210000000000 = 9100011^2 + 6100000^2 .

It is not a de Polignac number, because 120020200200121 - 2¹ = 120020200200119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120020200200127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31438671 + ... + 35048971.

It is an arithmetic number, because the mean of its divisors is an integer number (10830283222905).

Almost surely, 2^{120020200200121} is an apocalyptic number.

It is an amenable number.

120020200200121 is a deficient number, since it is larger than the sum of its proper divisors (9943198474739).

120020200200121 is a wasteful number, since it uses less digits than its factorization.

120020200200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807036 (or 3807023 counting only the distinct ones).

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

Adding to 120020200200121 its reverse (121002002020021), we get a palindrome (241022202220142).

The spelling of 120020200200121 in words is "one hundred twenty trillion, twenty billion, two hundred million, two hundred thousand, one hundred twenty-one".