120020120200021 has 16 divisors (see below), whose sum is σ = 127051170611904. Its totient is φ = 113228045126784.

The previous prime is 120020120200009. The next prime is 120020120200033. The reversal of 120020120200021 is 120002021020021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120020120200009) and next prime (120020120200033).

It is a cyclic number.

It is not a de Polignac number, because 120020120200021 - 2¹⁵ = 120020120167253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120020120199974 and 120020120200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020120200091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275099215 + ... + 275535148.

It is an arithmetic number, because the mean of its divisors is an integer number (7940698163244).

Almost surely, 2^{120020120200021} is an apocalyptic number.

It is an amenable number.

120020120200021 is a deficient number, since it is larger than the sum of its proper divisors (7031050411883).

120020120200021 is a wasteful number, since it uses less digits than its factorization.

120020120200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550634580.

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

Adding to 120020120200021 its reverse (120002021020021), we get a palindrome (240022141220042).

The spelling of 120020120200021 in words is "one hundred twenty trillion, twenty billion, one hundred twenty million, two hundred thousand, twenty-one".