30213222023221 has 2 divisors, whose sum is σ = 30213222023222. Its totient is φ = 30213222023220.

The previous prime is 30213222023213. The next prime is 30213222023279. The reversal of 30213222023221 is 12232022231203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20471869422225 + 9741352600996 = 4524585^2 + 3121114^2 .

It is a cyclic number.

It is not a de Polignac number, because 30213222023221 - 2³ = 30213222023213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30213222023291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106611011610 + 15106611011611.

It is an arithmetic number, because the mean of its divisors is an integer number (15106611011611).

Almost surely, 2^{30213222023221} is an apocalyptic number.

It is an amenable number.

30213222023221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30213222023221 is an equidigital number, since it uses as much as digits as its factorization.

30213222023221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 30213222023221 its reverse (12232022231203), we get a palindrome (42445244254424).

The spelling of 30213222023221 in words is "thirty trillion, two hundred thirteen billion, two hundred twenty-two million, twenty-three thousand, two hundred twenty-one".