2122121293 has 2 divisors, whose sum is σ = 2122121294. Its totient is φ = 2122121292.

The previous prime is 2122121291. The next prime is 2122121303. The reversal of 2122121293 is 3921212212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2121707844 + 413449 = 46062^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122121293 - 2¹ = 2122121291 is a prime.

Together with 2122121291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122121291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061060646 + 1061060647.

It is an arithmetic number, because the mean of its divisors is an integer number (1061060647).

Almost surely, 2^2122121293 is an apocalyptic number.

It is an amenable number.

2122121293 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122121293 is an equidigital number, since it uses as much as digits as its factorization.

2122121293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 2122121293 is about 46066.4877432608. The cubic root of 2122121293 is about 1285.0599866015.

The spelling of 2122121293 in words is "two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred ninety-three".