101231312120 has 16 divisors (see below), whose sum is σ = 227770452360. Its totient is φ = 40492524832.

The previous prime is 101231312101. The next prime is 101231312167. The reversal of 101231312120 is 21213132101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265391362 + ... + 1265391441.

Almost surely, 2^101231312120 is an apocalyptic number.

101231312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101231312120 is an abundant number, since it is smaller than the sum of its proper divisors (126539140240).

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

101231312120 is a wasteful number, since it uses less digits than its factorization.

101231312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530782814 (or 2530782810 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101231312120 its reverse (21213132101), we get a palindrome (122444444221).

The spelling of 101231312120 in words is "one hundred one billion, two hundred thirty-one million, three hundred twelve thousand, one hundred twenty".