121111211210993 has 2 divisors, whose sum is σ = 121111211210994. Its totient is φ = 121111211210992.

The previous prime is 121111211210923. The next prime is 121111211211017. The reversal of 121111211210993 is 399012112111121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106711523836129 + 14399687374864 = 10330127^2 + 3794692^2 .

It is a cyclic number.

It is not a de Polignac number, because 121111211210993 - 2²² = 121111207016689 is a prime.

It is not a weakly prime, because it can be changed into another prime (121111211210923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555605605496 + 60555605605497.

It is an arithmetic number, because the mean of its divisors is an integer number (60555605605497).

Almost surely, 2^{121111211210993} is an apocalyptic number.

It is an amenable number.

121111211210993 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111211210993 is an equidigital number, since it uses as much as digits as its factorization.

121111211210993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 35.

The spelling of 121111211210993 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred eleven million, two hundred ten thousand, nine hundred ninety-three".