120645101 has 2 divisors, whose sum is σ = 120645102. Its totient is φ = 120645100.

The previous prime is 120645071. The next prime is 120645113. The reversal of 120645101 is 101546021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72675625 + 47969476 = 8525^2 + 6926^2 .

It is a cyclic number.

It is not a de Polignac number, because 120645101 - 2²² = 116450797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120645131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60322550 + 60322551.

It is an arithmetic number, because the mean of its divisors is an integer number (60322551).

Almost surely, 2^120645101 is an apocalyptic number.

It is an amenable number.

120645101 is a deficient number, since it is larger than the sum of its proper divisors (1).

120645101 is an equidigital number, since it uses as much as digits as its factorization.

120645101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 120645101 is about 10983.8563810713. The cubic root of 120645101 is about 494.1247001164.

The spelling of 120645101 in words is "one hundred twenty million, six hundred forty-five thousand, one hundred one".