2211211213131 has 4 divisors (see below), whose sum is σ = 2948281617512. Its totient is φ = 1474140808752.

The previous prime is 2211211213117. The next prime is 2211211213153. The reversal of 2211211213131 is 1313121121122.

2211211213131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2211211213131 - 2⁶ = 2211211213067 is a prime.

It is a super-2 number, since 2×2211211213131² (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 = 2211211213098 and 2211211213107.

It is not an unprimeable number, because it can be changed into a prime (2211211213111) 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, 368535202186 + ... + 368535202191.

It is an arithmetic number, because the mean of its divisors is an integer number (737070404378).

Almost surely, 2^{2211211213131} is an apocalyptic number.

2211211213131 is a deficient number, since it is larger than the sum of its proper divisors (737070404381).

2211211213131 is an equidigital number, since it uses as much as digits as its factorization.

2211211213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737070404380.

The product of its digits is 144, while the sum is 21.

Adding to 2211211213131 its reverse (1313121121122), we get a palindrome (3524332334253).

The spelling of 2211211213131 in words is "two trillion, two hundred eleven billion, two hundred eleven million, two hundred thirteen thousand, one hundred thirty-one".