12001201200091 has 2 divisors, whose sum is σ = 12001201200092. Its totient is φ = 12001201200090.

The previous prime is 12001201200083. The next prime is 12001201200127. The reversal of 12001201200091 is 19000210210021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001201200091 - 2³ = 12001201200083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001201200041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000600600045 + 6000600600046.

It is an arithmetic number, because the mean of its divisors is an integer number (6000600600046).

Almost surely, 2^{12001201200091} is an apocalyptic number.

12001201200091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001201200091 is an equidigital number, since it uses as much as digits as its factorization.

12001201200091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 12001201200091 in words is "twelve trillion, one billion, two hundred one million, two hundred thousand, ninety-one".