121213110011993 has 2 divisors, whose sum is σ = 121213110011994. Its totient is φ = 121213110011992.

The previous prime is 121213110011921. The next prime is 121213110012017. The reversal of 121213110011993 is 399110011312121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121207703056969 + 5406955024 = 11009437^2 + 73532^2 .

It is a cyclic number.

It is not a de Polignac number, because 121213110011993 - 2⁸ = 121213110011737 is a prime.

It is not a weakly prime, because it can be changed into another prime (121213116011993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606555005996 + 60606555005997.

It is an arithmetic number, because the mean of its divisors is an integer number (60606555005997).

Almost surely, 2^{121213110011993} is an apocalyptic number.

It is an amenable number.

121213110011993 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213110011993 is an equidigital number, since it uses as much as digits as its factorization.

121213110011993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 121213110011993 in words is "one hundred twenty-one trillion, two hundred thirteen billion, one hundred ten million, eleven thousand, nine hundred ninety-three".