12028622220 has 144 divisors (see below), whose sum is σ = 38781200640. Its totient is φ = 3009218688.

The previous prime is 12028622183. The next prime is 12028622279. The reversal of 12028622220 is 2222682021.

12028622220 is a `hidden beast` number, since 12 + 0 + 2 + 8 + 622 + 2 + 20 = 666.

It is a super-2 number, since 2×12028622220² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 335187 + ... + 369333.

Almost surely, 2^12028622220 is an apocalyptic number.

12028622220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12028622220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19390600320).

12028622220 is an abundant number, since it is smaller than the sum of its proper divisors (26752578420).

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

12028622220 is a wasteful number, since it uses less digits than its factorization.

12028622220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34284 (or 34279 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 12028622220 in words is "twelve billion, twenty-eight million, six hundred twenty-two thousand, two hundred twenty".