30077253221 has 2 divisors, whose sum is σ = 30077253222. Its totient is φ = 30077253220.

The previous prime is 30077253211. The next prime is 30077253223. The reversal of 30077253221 is 12235277003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27838922500 + 2238330721 = 166850^2 + 47311^2 .

It is a cyclic number.

It is not a de Polignac number, because 30077253221 - 2¹⁴ = 30077236837 is a prime.

It is a super-2 number, since 2×30077253221² (a number of 22 digits) contains 22 as substring.

Together with 30077253223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30077253223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15038626610 + 15038626611.

It is an arithmetic number, because the mean of its divisors is an integer number (15038626611).

Almost surely, 2^30077253221 is an apocalyptic number.

It is an amenable number.

30077253221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30077253221 is an equidigital number, since it uses as much as digits as its factorization.

30077253221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 30077253221 in words is "thirty billion, seventy-seven million, two hundred fifty-three thousand, two hundred twenty-one".