30122120121 has 8 divisors (see below), whose sum is σ = 40304746080. Its totient is φ = 20010453792.

The previous prime is 30122120099. The next prime is 30122120143. The reversal of 30122120121 is 12102122103.

It is an interprime number because it is at equal distance from previous prime (30122120099) and next prime (30122120143).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30122120121 - 2⁶ = 30122120057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30122120121.

It is not an unprimeable number, because it can be changed into a prime (30122140121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17738916 + ... + 17740613.

It is an arithmetic number, because the mean of its divisors is an integer number (5038093260).

Almost surely, 2^30122120121 is an apocalyptic number.

It is an amenable number.

30122120121 is a deficient number, since it is larger than the sum of its proper divisors (10182625959).

30122120121 is a wasteful number, since it uses less digits than its factorization.

30122120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35479815.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30122120121 its reverse (12102122103), we get a palindrome (42224242224).

The spelling of 30122120121 in words is "thirty billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".