101231851885123 has 2 divisors, whose sum is σ = 101231851885124. Its totient is φ = 101231851885122.

The previous prime is 101231851885121. The next prime is 101231851885127. The reversal of 101231851885123 is 321588158132101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101231851885123 - 2¹ = 101231851885121 is a prime.

Together with 101231851885121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (101231851885121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50615925942561 + 50615925942562.

It is an arithmetic number, because the mean of its divisors is an integer number (50615925942562).

Almost surely, 2^{101231851885123} is an apocalyptic number.

101231851885123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101231851885123 is an equidigital number, since it uses as much as digits as its factorization.

101231851885123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 49.

The spelling of 101231851885123 in words is "one hundred one trillion, two hundred thirty-one billion, eight hundred fifty-one million, eight hundred eighty-five thousand, one hundred twenty-three".