30122321213 has 6 divisors (see below), whose sum is σ = 31791148254. Its totient is φ = 28536935544.

The previous prime is 30122321143. The next prime is 30122321219. The reversal of 30122321213 is 31212322103.

It can be written as a sum of positive squares in only one way, i.e., 20725345369 + 9396975844 = 143963^2 + 96938^2 .

It is not a de Polignac number, because 30122321213 - 2¹² = 30122317117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30122321219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41720306 + ... + 41721027.

It is an arithmetic number, because the mean of its divisors is an integer number (5298524709).

Almost surely, 2^30122321213 is an apocalyptic number.

It is an amenable number.

30122321213 is a deficient number, since it is larger than the sum of its proper divisors (1668827041).

30122321213 is an equidigital number, since it uses as much as digits as its factorization.

30122321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83441371 (or 83441352 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30122321213 its reverse (31212322103), we get a palindrome (61334643316).

The spelling of 30122321213 in words is "thirty billion, one hundred twenty-two million, three hundred twenty-one thousand, two hundred thirteen".