2211212233231 has 2 divisors, whose sum is σ = 2211212233232. Its totient is φ = 2211212233230.

The previous prime is 2211212233207. The next prime is 2211212233247. The reversal of 2211212233231 is 1323322121122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2211212233231 - 2¹³ = 2211212225039 is a prime.

It is a super-2 number, since 2×2211212233231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211212233196 and 2211212233205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211212233261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105606116615 + 1105606116616.

It is an arithmetic number, because the mean of its divisors is an integer number (1105606116616).

Almost surely, 2^{2211212233231} is an apocalyptic number.

2211212233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211212233231 is an equidigital number, since it uses as much as digits as its factorization.

2211212233231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

Adding to 2211212233231 its reverse (1323322121122), we get a palindrome (3534534354353).

The spelling of 2211212233231 in words is "two trillion, two hundred eleven billion, two hundred twelve million, two hundred thirty-three thousand, two hundred thirty-one".