2122021228 has 6 divisors (see below), whose sum is σ = 3713537156. Its totient is φ = 1061010612.

The previous prime is 2122021219. The next prime is 2122021229. The reversal of 2122021228 is 8221202212.

It is a junction number, because it is equal to n+sod(n) for n = 2122021199 and 2122021208.

It is not an unprimeable number, because it can be changed into a prime (2122021229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265252650 + ... + 265252657.

Almost surely, 2^2122021228 is an apocalyptic number.

It is an amenable number.

2122021228 is a deficient number, since it is larger than the sum of its proper divisors (1591515928).

2122021228 is a wasteful number, since it uses less digits than its factorization.

2122021228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530505311 (or 530505309 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 2122021228 is about 46065.4016372375. The cubic root of 2122021228 is about 1285.0397880154.

The spelling of 2122021228 in words is "two billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-eight".