2101122203 has 4 divisors (see below), whose sum is σ = 2152369128. Its totient is φ = 2049875280.

The previous prime is 2101122187. The next prime is 2101122217. The reversal of 2101122203 is 3022211012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101122203 - 2⁴ = 2101122187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101122223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25623401 + ... + 25623482.

It is an arithmetic number, because the mean of its divisors is an integer number (538092282).

Almost surely, 2^2101122203 is an apocalyptic number.

2101122203 is a deficient number, since it is larger than the sum of its proper divisors (51246925).

2101122203 is an equidigital number, since it uses as much as digits as its factorization.

2101122203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51246924.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2101122203 is about 45837.9995527728. Note that the first 3 decimals coincide. The cubic root of 2101122203 is about 1280.8072306819.

Adding to 2101122203 its reverse (3022211012), we get a palindrome (5123333215).

The spelling of 2101122203 in words is "two billion, one hundred one million, one hundred twenty-two thousand, two hundred three".