2122121279 has 2 divisors, whose sum is σ = 2122121280. Its totient is φ = 2122121278.

The previous prime is 2122121227. The next prime is 2122121291. The reversal of 2122121279 is 9721212212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2122121279 - 2¹⁶ = 2122055743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122121179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061060639 + 1061060640.

It is an arithmetic number, because the mean of its divisors is an integer number (1061060640).

Almost surely, 2^2122121279 is an apocalyptic number.

2122121279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122121279 is an equidigital number, since it uses as much as digits as its factorization.

2122121279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 2122121279 is about 46066.4875913065. The cubic root of 2122121279 is about 1285.0599837755.

The spelling of 2122121279 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred seventy-nine".