30121131210 has 32 divisors (see below), whose sum is σ = 72296209152. Its totient is φ = 8031691200.

The previous prime is 30121131203. The next prime is 30121131221. The reversal of 30121131210 is 1213112103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30121131210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477327 + ... + 536733.

It is an arithmetic number, because the mean of its divisors is an integer number (2259256536).

Almost surely, 2^30121131210 is an apocalyptic number.

30121131210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30121131210 is an abundant number, since it is smaller than the sum of its proper divisors (42175077942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121131210 is a wasteful number, since it uses less digits than its factorization.

30121131210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76318.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 30121131210 its reverse (1213112103), we get a palindrome (31334243313).

The spelling of 30121131210 in words is "thirty billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred ten".