2101222131 has 8 divisors (see below), whose sum is σ = 2808101520. Its totient is φ = 1397578752.

The previous prime is 2101222121. The next prime is 2101222163. The reversal of 2101222131 is 1312221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2101222131 - 2¹⁰ = 2101221107 is a prime.

It is a super-2 number, since 2×2101222131² = 8830268887608362322, 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 2101222131.

It is not an unprimeable number, because it can be changed into a prime (2101222111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807486 + ... + 810083.

It is an arithmetic number, because the mean of its divisors is an integer number (351012690).

Almost surely, 2^2101222131 is an apocalyptic number.

2101222131 is a deficient number, since it is larger than the sum of its proper divisors (706879389).

2101222131 is a wasteful number, since it uses less digits than its factorization.

2101222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618005.

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

The square root of 2101222131 is about 45839.0895524769. The cubic root of 2101222131 is about 1280.8275351452.

Adding to 2101222131 its reverse (1312221012), we get a palindrome (3413443143).

The spelling of 2101222131 in words is "two billion, one hundred one million, two hundred twenty-two thousand, one hundred thirty-one".