2120122397 has 2 divisors, whose sum is σ = 2120122398. Its totient is φ = 2120122396.

The previous prime is 2120122387. The next prime is 2120122463. The reversal of 2120122397 is 7932210212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2002204516 + 117917881 = 44746^2 + 10859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120122397 - 2⁸ = 2120122141 is a prime.

It is a super-2 number, since 2×2120122397² = 8989837956522051218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120122337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060061198 + 1060061199.

It is an arithmetic number, because the mean of its divisors is an integer number (1060061199).

Almost surely, 2^2120122397 is an apocalyptic number.

It is an amenable number.

2120122397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120122397 is an equidigital number, since it uses as much as digits as its factorization.

2120122397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2120122397 is about 46044.7868601865. The cubic root of 2120122397 is about 1284.6563797306.

The spelling of 2120122397 in words is "two billion, one hundred twenty million, one hundred twenty-two thousand, three hundred ninety-seven".