3122496821 has 2 divisors, whose sum is σ = 3122496822. Its totient is φ = 3122496820.

The previous prime is 3122496781. The next prime is 3122496851. The reversal of 3122496821 is 1286942213.

3122496821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3104049796 + 18447025 = 55714^2 + 4295^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122496821 - 2²⁶ = 3055387957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3122496851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561248410 + 1561248411.

It is an arithmetic number, because the mean of its divisors is an integer number (1561248411).

Almost surely, 2^3122496821 is an apocalyptic number.

It is an amenable number.

3122496821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3122496821 is an equidigital number, since it uses as much as digits as its factorization.

3122496821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 3122496821 is about 55879.3058385660. The cubic root of 3122496821 is about 1461.6184000412.

The spelling of 3122496821 in words is "three billion, one hundred twenty-two million, four hundred ninety-six thousand, eight hundred twenty-one".