1323100200091 has 2 divisors, whose sum is σ = 1323100200092. Its totient is φ = 1323100200090.

The previous prime is 1323100200083. The next prime is 1323100200109. The reversal of 1323100200091 is 1900020013231.

Together with next prime (1323100200109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323100200091 - 2³ = 1323100200083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323100200391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661550100045 + 661550100046.

It is an arithmetic number, because the mean of its divisors is an integer number (661550100046).

Almost surely, 2^{1323100200091} is an apocalyptic number.

1323100200091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323100200091 is an equidigital number, since it uses as much as digits as its factorization.

1323100200091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 1323100200091 in words is "one trillion, three hundred twenty-three billion, one hundred million, two hundred thousand, ninety-one".