123011120191 has 2 divisors, whose sum is σ = 123011120192. Its totient is φ = 123011120190.

The previous prime is 123011120171. The next prime is 123011120279. The reversal of 123011120191 is 191021110321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123011120191 - 2¹³ = 123011111999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123011120171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505560095 + 61505560096.

It is an arithmetic number, because the mean of its divisors is an integer number (61505560096).

Almost surely, 2^123011120191 is an apocalyptic number.

123011120191 is a deficient number, since it is larger than the sum of its proper divisors (1).

123011120191 is an equidigital number, since it uses as much as digits as its factorization.

123011120191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 123011120191 in words is "one hundred twenty-three billion, eleven million, one hundred twenty thousand, one hundred ninety-one".