212111110211131 has 4 divisors (see below), whose sum is σ = 212413693821264. Its totient is φ = 211808526601000.

The previous prime is 212111110211069. The next prime is 212111110211237. The reversal of 212111110211131 is 131112011111212.

It is a happy number.

212111110211131 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 a cyclic number.

It is not a de Polignac number, because 212111110211131 - 2²⁷ = 212110975993403 is a prime.

It is a super-2 number, since 2×212111110211131² (a number of 29 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 = 212111110211099 and 212111110211108.

It is not an unprimeable number, because it can be changed into a prime (212111110211531) 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, 151291804015 + ... + 151291805416.

It is an arithmetic number, because the mean of its divisors is an integer number (53103423455316).

Almost surely, 2^{212111110211131} is an apocalyptic number.

212111110211131 is a deficient number, since it is larger than the sum of its proper divisors (302583610133).

212111110211131 is an equidigital number, since it uses as much as digits as its factorization.

212111110211131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302583610132.

The product of its (nonzero) digits is 24, while the sum is 19.

Adding to 212111110211131 its reverse (131112011111212), we get a palindrome (343223121322343).

The spelling of 212111110211131 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred ten million, two hundred eleven thousand, one hundred thirty-one".