30301121220 has 48 divisors (see below), whose sum is σ = 84951077568. Its totient is φ = 8070019200.

The previous prime is 30301121183. The next prime is 30301121237. The reversal of 30301121220 is 2212110303.

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 30301121220.

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, 273631 + ... + 368070.

It is an arithmetic number, because the mean of its divisors is an integer number (1769814116).

Almost surely, 2^30301121220 is an apocalyptic number.

30301121220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30301121220 is an abundant number, since it is smaller than the sum of its proper divisors (54649956348).

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

30301121220 is a wasteful number, since it uses less digits than its factorization.

30301121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642500 (or 642498 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30301121220 its reverse (2212110303), we get a palindrome (32513231523).

It can be divided in two parts, 3030 and 1121220, that added together give a triangular number (1124250 = T₁₄₉₉).

The spelling of 30301121220 in words is "thirty billion, three hundred one million, one hundred twenty-one thousand, two hundred twenty".