111210000011993 has 2 divisors, whose sum is σ = 111210000011994. Its totient is φ = 111210000011992.

The previous prime is 111210000011977. The next prime is 111210000012029. The reversal of 111210000011993 is 399110000012111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109062681982864 + 2147318029129 = 10443308^2 + 1465373^2 .

It is a cyclic number.

It is not a de Polignac number, because 111210000011993 - 2⁴ = 111210000011977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111210000013993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605000005996 + 55605000005997.

It is an arithmetic number, because the mean of its divisors is an integer number (55605000005997).

Almost surely, 2^{111210000011993} is an apocalyptic number.

It is an amenable number.

111210000011993 is a deficient number, since it is larger than the sum of its proper divisors (1).

111210000011993 is an equidigital number, since it uses as much as digits as its factorization.

111210000011993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 29.

The spelling of 111210000011993 in words is "one hundred eleven trillion, two hundred ten billion, eleven thousand, nine hundred ninety-three".