120021203221 has 4 divisors (see below), whose sum is σ = 120937395744. Its totient is φ = 119105010700.

The previous prime is 120021203201. The next prime is 120021203231. The reversal of 120021203221 is 122302120021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120021203221 - 2⁹ = 120021202709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021203195 and 120021203204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021203201) 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, 458096065 + ... + 458096326.

It is an arithmetic number, because the mean of its divisors is an integer number (30234348936).

Almost surely, 2^120021203221 is an apocalyptic number.

It is an amenable number.

120021203221 is a deficient number, since it is larger than the sum of its proper divisors (916192523).

120021203221 is an equidigital number, since it uses as much as digits as its factorization.

120021203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916192522.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 120021203221 its reverse (122302120021), we get a palindrome (242323323242).

The spelling of 120021203221 in words is "one hundred twenty billion, twenty-one million, two hundred three thousand, two hundred twenty-one".