2122531109 has 2 divisors, whose sum is σ = 2122531110. Its totient is φ = 2122531108.

The previous prime is 2122531003. The next prime is 2122531153. The reversal of 2122531109 is 9011352212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2026980484 + 95550625 = 45022^2 + 9775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122531109 - 2²⁸ = 1854095653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122531189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061265554 + 1061265555.

It is an arithmetic number, because the mean of its divisors is an integer number (1061265555).

Almost surely, 2^2122531109 is an apocalyptic number.

It is an amenable number.

2122531109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122531109 is an equidigital number, since it uses as much as digits as its factorization.

2122531109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2122531109 is about 46070.9356210616. The cubic root of 2122531109 is about 1285.1427032442.

The spelling of 2122531109 in words is "two billion, one hundred twenty-two million, five hundred thirty-one thousand, one hundred nine".