30221069 has 2 divisors, whose sum is σ = 30221070. Its totient is φ = 30221068.

The previous prime is 30221041. The next prime is 30221071. The reversal of 30221069 is 96012203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26399044 + 3822025 = 5138^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221069 - 2²⁴ = 13443853 is a prime.

It is a super-2 number, since 2×30221069² = 1826626023005522, which contains 22 as substring.

Together with 30221071, 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 (30221099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110534 + 15110535.

It is an arithmetic number, because the mean of its divisors is an integer number (15110535).

Almost surely, 2^30221069 is an apocalyptic number.

It is an amenable number.

30221069 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221069 is an equidigital number, since it uses as much as digits as its factorization.

30221069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30221069 is about 5497.3692799375. The cubic root of 30221069 is about 311.4846199037.

The spelling of 30221069 in words is "thirty million, two hundred twenty-one thousand, sixty-nine".