1212111033311 has 2 divisors, whose sum is σ = 1212111033312. Its totient is φ = 1212111033310.

The previous prime is 1212111033271. The next prime is 1212111033313. The reversal of 1212111033311 is 1133301112121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212111033311 - 2⁶ = 1212111033247 is a prime.

Together with 1212111033313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212111033313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606055516655 + 606055516656.

It is an arithmetic number, because the mean of its divisors is an integer number (606055516656).

Almost surely, 2^{1212111033311} is an apocalyptic number.

1212111033311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212111033311 is an equidigital number, since it uses as much as digits as its factorization.

1212111033311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1212111033311 its reverse (1133301112121), we get a palindrome (2345412145432).

The spelling of 1212111033311 in words is "one trillion, two hundred twelve billion, one hundred eleven million, thirty-three thousand, three hundred eleven".