121223022015091 has 2 divisors, whose sum is σ = 121223022015092. Its totient is φ = 121223022015090.

The previous prime is 121223022015019. The next prime is 121223022015107. The reversal of 121223022015091 is 190510220322121.

It is a happy number.

Together with previous prime (121223022015019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121223022015091 - 2¹⁹ = 121223021490803 is a prime.

It is not a weakly prime, because it can be changed into another prime (121223022615091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611511007545 + 60611511007546.

It is an arithmetic number, because the mean of its divisors is an integer number (60611511007546).

Almost surely, 2^{121223022015091} is an apocalyptic number.

121223022015091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223022015091 is an equidigital number, since it uses as much as digits as its factorization.

121223022015091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 121223022015091 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, twenty-two million, fifteen thousand, ninety-one".