101221112120 has 16 divisors (see below), whose sum is σ = 227747502360. Its totient is φ = 40488444832.

The previous prime is 101221112117. The next prime is 101221112147. The reversal of 101221112120 is 21211122101.

It is a super-2 number, since 2×101221112120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101221112095 and 101221112104.

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, 1265263862 + ... + 1265263941.

Almost surely, 2^101221112120 is an apocalyptic number.

101221112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221112120 is an abundant number, since it is smaller than the sum of its proper divisors (126526390240).

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

101221112120 is a wasteful number, since it uses less digits than its factorization.

101221112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530527814 (or 2530527810 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101221112120 its reverse (21211122101), we get a palindrome (122432234221).

The spelling of 101221112120 in words is "one hundred one billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty".