1212030321091 has 2 divisors, whose sum is σ = 1212030321092. Its totient is φ = 1212030321090.

The previous prime is 1212030321043. The next prime is 1212030321101. The reversal of 1212030321091 is 1901230302121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212030321091 - 2²⁹ = 1211493450179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212030321001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606015160545 + 606015160546.

It is an arithmetic number, because the mean of its divisors is an integer number (606015160546).

Almost surely, 2^{1212030321091} is an apocalyptic number.

1212030321091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212030321091 is an equidigital number, since it uses as much as digits as its factorization.

1212030321091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 1212030321091 in words is "one trillion, two hundred twelve billion, thirty million, three hundred twenty-one thousand, ninety-one".