2100021229 has 16 divisors (see below), whose sum is σ = 2166790912. Its totient is φ = 2034160128.

The previous prime is 2100021181. The next prime is 2100021281. The reversal of 2100021229 is 9221200012.

It is a cyclic number.

It is not a de Polignac number, because 2100021229 - 2⁹ = 2100020717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100021299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4535452 + ... + 4535914.

It is an arithmetic number, because the mean of its divisors is an integer number (135424432).

Almost surely, 2^2100021229 is an apocalyptic number.

It is an amenable number.

2100021229 is a deficient number, since it is larger than the sum of its proper divisors (66769683).

2100021229 is a wasteful number, since it uses less digits than its factorization.

2100021229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2100021229 is about 45825.9885763526. The cubic root of 2100021229 is about 1280.5834801182.

The spelling of 2100021229 in words is "two billion, one hundred million, twenty-one thousand, two hundred twenty-nine".