121131023301091 has 2 divisors, whose sum is σ = 121131023301092. Its totient is φ = 121131023301090.

The previous prime is 121131023301089. The next prime is 121131023301133. The reversal of 121131023301091 is 190103320131121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121131023301091 - 2¹ = 121131023301089 is a prime.

Together with 121131023301089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121131023301031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60565511650545 + 60565511650546.

It is an arithmetic number, because the mean of its divisors is an integer number (60565511650546).

Almost surely, 2^{121131023301091} is an apocalyptic number.

121131023301091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121131023301091 is an equidigital number, since it uses as much as digits as its factorization.

121131023301091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

It can be divided in two parts, 1211310 and 23301091, that added together give a square (24512401 = 4951²).

The spelling of 121131023301091 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, twenty-three million, three hundred one thousand, ninety-one".