120220209961 has 2 divisors, whose sum is σ = 120220209962. Its totient is φ = 120220209960.

The previous prime is 120220209937. The next prime is 120220210013. The reversal of 120220209961 is 169902022021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116677579561 + 3542630400 = 341581^2 + 59520^2 .

It is a cyclic number.

It is not a de Polignac number, because 120220209961 - 2¹⁷ = 120220078889 is a prime.

It is not a weakly prime, because it can be changed into another prime (120220209661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110104980 + 60110104981.

It is an arithmetic number, because the mean of its divisors is an integer number (60110104981).

Almost surely, 2^120220209961 is an apocalyptic number.

It is an amenable number.

120220209961 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220209961 is an equidigital number, since it uses as much as digits as its factorization.

120220209961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 120220209961 in words is "one hundred twenty billion, two hundred twenty million, two hundred nine thousand, nine hundred sixty-one".