30772001021 has 2 divisors, whose sum is σ = 30772001022. Its totient is φ = 30772001020.

The previous prime is 30772000967. The next prime is 30772001059. The reversal of 30772001021 is 12010027703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15497760100 + 15274240921 = 124490^2 + 123589^2 .

It is a cyclic number.

It is not a de Polignac number, because 30772001021 - 2²⁶ = 30704892157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30772001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15386000510 + 15386000511.

It is an arithmetic number, because the mean of its divisors is an integer number (15386000511).

Almost surely, 2^30772001021 is an apocalyptic number.

It is an amenable number.

30772001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30772001021 is an equidigital number, since it uses as much as digits as its factorization.

30772001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 23.

Adding to 30772001021 its reverse (12010027703), we get a palindrome (42782028724).

The spelling of 30772001021 in words is "thirty billion, seven hundred seventy-two million, one thousand, twenty-one".