120221222021 has 4 divisors (see below), whose sum is σ = 120480879552. Its totient is φ = 119961564492.

The previous prime is 120221221987. The next prime is 120221222101. The reversal of 120221222021 is 120222122021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120222122021 = 197089 ⋅609989.

It is a cyclic number.

It is not a de Polignac number, because 120221222021 - 2⁶ = 120221221957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221212021) 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, 129828071 + ... + 129828996.

It is an arithmetic number, because the mean of its divisors is an integer number (30120219888).

Almost surely, 2^120221222021 is an apocalyptic number.

It is an amenable number.

120221222021 is a deficient number, since it is larger than the sum of its proper divisors (259657531).

120221222021 is an equidigital number, since it uses as much as digits as its factorization.

120221222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259657530.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120221222021 its reverse (120222122021), we get a palindrome (240443344042).

The spelling of 120221222021 in words is "one hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, twenty-one".