212133331231 has 2 divisors, whose sum is σ = 212133331232. Its totient is φ = 212133331230.

The previous prime is 212133331217. The next prime is 212133331237. The reversal of 212133331231 is 132133331212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212133331231 - 2⁷ = 212133331103 is a prime.

It is a super-2 number, since 2×212133331231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212133331196 and 212133331205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212133331237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066665615 + 106066665616.

It is an arithmetic number, because the mean of its divisors is an integer number (106066665616).

Almost surely, 2^212133331231 is an apocalyptic number.

212133331231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212133331231 is an equidigital number, since it uses as much as digits as its factorization.

212133331231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 25.

Adding to 212133331231 its reverse (132133331212), we get a palindrome (344266662443).

The spelling of 212133331231 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred thirty-one thousand, two hundred thirty-one".