120221021021 has 16 divisors (see below), whose sum is σ = 132383160000. Its totient is φ = 108730613376.

The previous prime is 120221021017. The next prime is 120221021069. The reversal of 120221021021 is 120120122021.

It is a cyclic number.

It is not a de Polignac number, because 120221021021 - 2² = 120221021017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221020987 and 120221021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221027021) 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, 1176731 + ... + 1274808.

It is an arithmetic number, because the mean of its divisors is an integer number (8273947500).

Almost surely, 2^120221021021 is an apocalyptic number.

It is an amenable number.

120221021021 is a deficient number, since it is larger than the sum of its proper divisors (12162138979).

120221021021 is a wasteful number, since it uses less digits than its factorization.

120221021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451676.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120221021021 its reverse (120120122021), we get a palindrome (240341143042).

The spelling of 120221021021 in words is "one hundred twenty billion, two hundred twenty-one million, twenty-one thousand, twenty-one".