12221201001091 has 2 divisors, whose sum is σ = 12221201001092. Its totient is φ = 12221201001090.

The previous prime is 12221201001047. The next prime is 12221201001127. The reversal of 12221201001091 is 19010010212221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12221201001091 - 2¹³ = 12221200992899 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221201001041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110600500545 + 6110600500546.

It is an arithmetic number, because the mean of its divisors is an integer number (6110600500546).

Almost surely, 2^{12221201001091} is an apocalyptic number.

12221201001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221201001091 is an equidigital number, since it uses as much as digits as its factorization.

12221201001091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12221201001091 in words is "twelve trillion, two hundred twenty-one billion, two hundred one million, one thousand, ninety-one".