2222120628 has 120 divisors (see below), whose sum is σ = 7149709952. Its totient is φ = 586046016.

The previous prime is 2222120603. The next prime is 2222120629. The reversal of 2222120628 is 8260212222.

2222120628 is a `hidden beast` number, since 2 + 2 + 22 + 12 + 0 + 628 = 666.

2222120628 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2222120628² = 9875640170766228768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222120629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8200 + ... + 67167.

Almost surely, 2^2222120628 is an apocalyptic number.

2222120628 is a gapful number since it is divisible by the number (28) 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 2222120628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3574854976).

2222120628 is an abundant number, since it is smaller than the sum of its proper divisors (4927589324).

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

2222120628 is a wasteful number, since it uses less digits than its factorization.

2222120628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75403 (or 75392 counting only the distinct ones).

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

The square root of 2222120628 is about 47139.3744973350. The cubic root of 2222120628 is about 1304.9359936899.

It can be divided in two parts, 22221 and 20628, that added together give a square (42849 = 207²).

The spelling of 2222120628 in words is "two billion, two hundred twenty-two million, one hundred twenty thousand, six hundred twenty-eight".