120200021 has 8 divisors (see below), whose sum is σ = 121642560. Its totient is φ = 118764352.

The previous prime is 120200011. The next prime is 120200029. The reversal of 120200021 is 120002021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120200021 - 2⁶ = 120199957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120199981 and 120200008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120200029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39086 + ... + 42048.

It is an arithmetic number, because the mean of its divisors is an integer number (15205320).

Almost surely, 2^120200021 is an apocalyptic number.

It is an amenable number.

120200021 is a deficient number, since it is larger than the sum of its proper divisors (1442539).

120200021 is a wasteful number, since it uses less digits than its factorization.

120200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 120200021 is about 10963.5770166493. The cubic root of 120200021 is about 493.5163150759.

Adding to 120200021 its reverse (120002021), we get a palindrome (240202042).

It can be divided in two parts, 1202000 and 21, that added together give a palindrome (1202021).

The spelling of 120200021 in words is "one hundred twenty million, two hundred thousand, twenty-one".