30221021153 has 2 divisors, whose sum is σ = 30221021154. Its totient is φ = 30221021152.

The previous prime is 30221021113. The next prime is 30221021179. The reversal of 30221021153 is 35112012203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24142012129 + 6079009024 = 155377^2 + 77968^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221021153 - 2²⁰ = 30219972577 is a prime.

It is not a weakly prime, because it can be changed into another prime (30221021113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110510576 + 15110510577.

It is an arithmetic number, because the mean of its divisors is an integer number (15110510577).

Almost surely, 2^30221021153 is an apocalyptic number.

It is an amenable number.

30221021153 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221021153 is an equidigital number, since it uses as much as digits as its factorization.

30221021153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 30221021153 its reverse (35112012203), we get a palindrome (65333033356).

The spelling of 30221021153 in words is "thirty billion, two hundred twenty-one million, twenty-one thousand, one hundred fifty-three".