120111211993 has 2 divisors, whose sum is σ = 120111211994. Its totient is φ = 120111211992.

The previous prime is 120111211991. The next prime is 120111212017. The reversal of 120111211993 is 399112111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110777140224 + 9334071769 = 332832^2 + 96613^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111211993 - 2¹ = 120111211991 is a prime.

Together with 120111211991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120111211991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60055605996 + 60055605997.

It is an arithmetic number, because the mean of its divisors is an integer number (60055605997).

Almost surely, 2^120111211993 is an apocalyptic number.

It is an amenable number.

120111211993 is a deficient number, since it is larger than the sum of its proper divisors (1).

120111211993 is an equidigital number, since it uses as much as digits as its factorization.

120111211993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 31.

The spelling of 120111211993 in words is "one hundred twenty billion, one hundred eleven million, two hundred eleven thousand, nine hundred ninety-three".