2101122231 has 16 divisors (see below), whose sum is σ = 3040033920. Its totient is φ = 1283124960.

The previous prime is 2101122229. The next prime is 2101122251. The reversal of 2101122231 is 1322211012.

It is not a de Polignac number, because 2101122231 - 2¹ = 2101122229 is a prime.

It is a super-2 number, since 2×2101122231² = 8829429259204834722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2101122231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101122251) 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 15 ways as a sum of consecutive naturals, for example, 200521 + ... + 210738.

It is an arithmetic number, because the mean of its divisors is an integer number (190002120).

Almost surely, 2^2101122231 is an apocalyptic number.

2101122231 is a deficient number, since it is larger than the sum of its proper divisors (938911689).

2101122231 is a wasteful number, since it uses less digits than its factorization.

2101122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411406.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2101122231 is about 45837.9998581963. Note that the first 3 decimals coincide. The cubic root of 2101122231 is about 1280.8072363714.

Adding to 2101122231 its reverse (1322211012), we get a palindrome (3423333243).

The spelling of 2101122231 in words is "two billion, one hundred one million, one hundred twenty-two thousand, two hundred thirty-one".