2120111228 has 12 divisors (see below), whose sum is σ = 3715631640. Its totient is φ = 1058502192.

The previous prime is 2120111221. The next prime is 2120111233. The reversal of 2120111228 is 8221110212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120111221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385283 + ... + 390746.

It is an arithmetic number, because the mean of its divisors is an integer number (309635970).

Almost surely, 2^2120111228 is an apocalyptic number.

It is an amenable number.

2120111228 is a deficient number, since it is larger than the sum of its proper divisors (1595520412).

2120111228 is a wasteful number, since it uses less digits than its factorization.

2120111228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776716 (or 776714 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 2120111228 is about 46044.6655759383. The cubic root of 2120111228 is about 1284.6541238306.

The spelling of 2120111228 in words is "two billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty-eight".