120020200121 has 4 divisors (see below), whose sum is σ = 120022142244. Its totient is φ = 120018258000.

The previous prime is 120020200093. The next prime is 120020200123. The reversal of 120020200121 is 121002020021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101432695225 + 18587504896 = 318485^2 + 136336^2 .

It is a cyclic number.

It is not a de Polignac number, because 120020200121 - 2¹⁴ = 120020183737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120020200123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875210 + ... + 1003011.

It is an arithmetic number, because the mean of its divisors is an integer number (30005535561).

Almost surely, 2^120020200121 is an apocalyptic number.

It is an amenable number.

120020200121 is a deficient number, since it is larger than the sum of its proper divisors (1942123).

120020200121 is an equidigital number, since it uses as much as digits as its factorization.

120020200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942122.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120020200121 its reverse (121002020021), we get a palindrome (241022220142).

The spelling of 120020200121 in words is "one hundred twenty billion, twenty million, two hundred thousand, one hundred twenty-one".