101221200112 has 20 divisors (see below), whose sum is σ = 204642861840. Its totient is φ = 48410139008.

The previous prime is 101221200103. The next prime is 101221200139. The reversal of 101221200112 is 211002122101.

It is a super-2 number, since 2×101221200112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101221200092 and 101221200101.

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, 137528437 + ... + 137529172.

It is an arithmetic number, because the mean of its divisors is an integer number (10232143092).

Almost surely, 2^101221200112 is an apocalyptic number.

It is an amenable number.

101221200112 is an abundant number, since it is smaller than the sum of its proper divisors (103421661728).

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

101221200112 is a wasteful number, since it uses less digits than its factorization.

101221200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275057640 (or 275057634 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101221200112 its reverse (211002122101), we get a palindrome (312223322213).

The spelling of 101221200112 in words is "one hundred one billion, two hundred twenty-one million, two hundred thousand, one hundred twelve".