30221868771 has 10 divisors (see below), whose sum is σ = 45146248532. Its totient is φ = 20147912460.

The previous prime is 30221868737. The next prime is 30221868793. The reversal of 30221868771 is 17786812203.

30221868771 is a `hidden beast` number, since 302 + 218 + 68 + 7 + 71 = 666.

It is not a de Polignac number, because 30221868771 - 2⁶ = 30221868707 is a prime.

It is a super-2 number, since 2×30221868771² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30221868071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 186554665 + ... + 186554826.

Almost surely, 2^30221868771 is an apocalyptic number.

30221868771 is a deficient number, since it is larger than the sum of its proper divisors (14924379761).

30221868771 is an equidigital number, since it uses as much as digits as its factorization.

30221868771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373109503 (or 373109494 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 30221868771 in words is "thirty billion, two hundred twenty-one million, eight hundred sixty-eight thousand, seven hundred seventy-one".