2212221123131 has 4 divisors (see below), whose sum is σ = 2242525522152. Its totient is φ = 2181916724112.

The previous prime is 2212221123127. The next prime is 2212221123149. The reversal of 2212221123131 is 1313211222122.

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 2212221123131 - 2² = 2212221123127 is a prime.

It is a super-2 number, since 2×2212221123131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212221123097 and 2212221123106.

It is not an unprimeable number, because it can be changed into a prime (2212221123121) 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, 15152199401 + ... + 15152199546.

It is an arithmetic number, because the mean of its divisors is an integer number (560631380538).

Almost surely, 2^{2212221123131} is an apocalyptic number.

2212221123131 is a deficient number, since it is larger than the sum of its proper divisors (30304399021).

2212221123131 is an equidigital number, since it uses as much as digits as its factorization.

2212221123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30304399020.

The product of its digits is 576, while the sum is 23.

Adding to 2212221123131 its reverse (1313211222122), we get a palindrome (3525432345253).

The spelling of 2212221123131 in words is "two trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred thirty-one".