1223133312091 has 2 divisors, whose sum is σ = 1223133312092. Its totient is φ = 1223133312090.

The previous prime is 1223133312077. The next prime is 1223133312131. The reversal of 1223133312091 is 1902133313221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223133312091 - 2⁷ = 1223133311963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223133312041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611566656045 + 611566656046.

It is an arithmetic number, because the mean of its divisors is an integer number (611566656046).

Almost surely, 2^{1223133312091} is an apocalyptic number.

1223133312091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223133312091 is an equidigital number, since it uses as much as digits as its factorization.

1223133312091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 1223133312091 in words is "one trillion, two hundred twenty-three billion, one hundred thirty-three million, three hundred twelve thousand, ninety-one".