30102221220 has 48 divisors (see below), whose sum is σ = 84478289280. Its totient is φ = 8008966656.

The previous prime is 30102221209. The next prime is 30102221243. The reversal of 30102221220 is 2212220103.

It is a happy number.

It is a super-2 number, since 2×30102221220² (a number of 22 digits) contains 22 as substring.

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 30102221220.

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, 545077 + ... + 597756.

It is an arithmetic number, because the mean of its divisors is an integer number (1759964360).

Almost surely, 2^30102221220 is an apocalyptic number.

30102221220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30102221220 is an abundant number, since it is smaller than the sum of its proper divisors (54376068060).

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

30102221220 is a wasteful number, since it uses less digits than its factorization.

30102221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143284 (or 1143282 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 30102221220 its reverse (2212220103), we get a palindrome (32314441323).

The spelling of 30102221220 in words is "thirty billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty".