123102011971 has 2 divisors, whose sum is σ = 123102011972. Its totient is φ = 123102011970.

The previous prime is 123102011969. The next prime is 123102012001. The reversal of 123102011971 is 179110201321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123102011971 - 2¹ = 123102011969 is a prime.

Together with 123102011969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123102011471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551005985 + 61551005986.

It is an arithmetic number, because the mean of its divisors is an integer number (61551005986).

Almost surely, 2^123102011971 is an apocalyptic number.

123102011971 is a deficient number, since it is larger than the sum of its proper divisors (1).

123102011971 is an equidigital number, since it uses as much as digits as its factorization.

123102011971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 28.

The spelling of 123102011971 in words is "one hundred twenty-three billion, one hundred two million, eleven thousand, nine hundred seventy-one".