121310022191 has 2 divisors, whose sum is σ = 121310022192. Its totient is φ = 121310022190.

The previous prime is 121310022181. The next prime is 121310022277. The reversal of 121310022191 is 191220013121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121310022191 - 2¹⁴ = 121310005807 is a prime.

It is a super-2 number, since 2×121310022191² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121310022161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655011095 + 60655011096.

It is an arithmetic number, because the mean of its divisors is an integer number (60655011096).

Almost surely, 2^121310022191 is an apocalyptic number.

121310022191 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310022191 is an equidigital number, since it uses as much as digits as its factorization.

121310022191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 121310022191 in words is "one hundred twenty-one billion, three hundred ten million, twenty-two thousand, one hundred ninety-one".