2100229857 has 32 divisors (see below), whose sum is σ = 3416862720. Its totient is φ = 1264410000.

The previous prime is 2100229849. The next prime is 2100229883. The reversal of 2100229857 is 7589220012.

It is not a de Polignac number, because 2100229857 - 2³ = 2100229849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100224857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21432 + ... + 68262.

It is an arithmetic number, because the mean of its divisors is an integer number (106776960).

Almost surely, 2^2100229857 is an apocalyptic number.

2100229857 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2100229857 is a deficient number, since it is larger than the sum of its proper divisors (1316632863).

2100229857 is a wasteful number, since it uses less digits than its factorization.

2100229857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47002 (or 46996 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 2100229857 is about 45828.2648264147. The cubic root of 2100229857 is about 1280.6258855187.

Adding to 2100229857 its reverse (7589220012), we get a palindrome (9689449869).

The spelling of 2100229857 in words is "two billion, one hundred million, two hundred twenty-nine thousand, eight hundred fifty-seven".