120022012021 has 2 divisors, whose sum is σ = 120022012022. Its totient is φ = 120022012020.

The previous prime is 120022012009. The next prime is 120022012043. The reversal of 120022012021 is 120210220021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100100100996 + 19921911025 = 316386^2 + 141145^2 .

It is a cyclic number.

It is not a de Polignac number, because 120022012021 - 2²¹ = 120019914869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120022011992 and 120022012010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120022012921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60011006010 + 60011006011.

It is an arithmetic number, because the mean of its divisors is an integer number (60011006011).

Almost surely, 2^120022012021 is an apocalyptic number.

It is an amenable number.

120022012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120022012021 is an equidigital number, since it uses as much as digits as its factorization.

120022012021 is an evil number, because the sum of its binary digits is even.

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

Adding to 120022012021 its reverse (120210220021), we get a palindrome (240232232042).

The spelling of 120022012021 in words is "one hundred twenty billion, twenty-two million, twelve thousand, twenty-one".