30515422212121 has 48 divisors (see below), whose sum is σ = 39957981275520. Its totient is φ = 22783054694400.

The previous prime is 30515422212083. The next prime is 30515422212161. The reversal of 30515422212121 is 12121222451503.

It is not a de Polignac number, because 30515422212121 - 2⁷ = 30515422211993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30515422212161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1523976 + ... + 7959481.

It is an arithmetic number, because the mean of its divisors is an integer number (832457943240).

Almost surely, 2^{30515422212121} is an apocalyptic number.

It is an amenable number.

30515422212121 is a deficient number, since it is larger than the sum of its proper divisors (9442559063399).

30515422212121 is a wasteful number, since it uses less digits than its factorization.

30515422212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483646 (or 9483635 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 30515422212121 its reverse (12121222451503), we get a palindrome (42636644663624).

The spelling of 30515422212121 in words is "thirty trillion, five hundred fifteen billion, four hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".