2121101197 has 2 divisors, whose sum is σ = 2121101198. Its totient is φ = 2121101196.

The previous prime is 2121101173. The next prime is 2121101261. The reversal of 2121101197 is 7911011212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1491040996 + 630060201 = 38614^2 + 25101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121101197 - 2⁷ = 2121101069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121101137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060550598 + 1060550599.

It is an arithmetic number, because the mean of its divisors is an integer number (1060550599).

Almost surely, 2^2121101197 is an apocalyptic number.

It is an amenable number.

2121101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121101197 is an equidigital number, since it uses as much as digits as its factorization.

2121101197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 25.

The square root of 2121101197 is about 46055.4144156797. The cubic root of 2121101197 is about 1284.8540457098.

The spelling of 2121101197 in words is "two billion, one hundred twenty-one million, one hundred one thousand, one hundred ninety-seven".