123101101320012 has 36 divisors (see below), whose sum is σ = 311178503073256. Its totient is φ = 41032873002240.

The previous prime is 123101101319957. The next prime is 123101101320101. The reversal of 123101101320012 is 210023101101321.

123101101320012 is a `hidden beast` number, since 1 + 231 + 0 + 1 + 101 + 320 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×123101101320012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32665189 + ... + 36238332.

Almost surely, 2^{123101101320012} is an apocalyptic number.

123101101320012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123101101320012 is an abundant number, since it is smaller than the sum of its proper divisors (188077401753244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123101101320012 is a wasteful number, since it uses less digits than its factorization.

123101101320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68953158 (or 68953153 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 123101101320012 its reverse (210023101101321), we get a palindrome (333124202421333).

The spelling of 123101101320012 in words is "one hundred twenty-three trillion, one hundred one billion, one hundred one million, three hundred twenty thousand, twelve".