101220212112 has 20 divisors (see below), whose sum is σ = 261485548080. Its totient is φ = 33740070688.

The previous prime is 101220212111. The next prime is 101220212143. The reversal of 101220212112 is 211212022101.

It is a junction number, because it is equal to n+sod(n) for n = 101220212091 and 101220212100.

It is not an unprimeable number, because it can be changed into a prime (101220212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054377162 + ... + 1054377257.

It is an arithmetic number, because the mean of its divisors is an integer number (13074277404).

Almost surely, 2^101220212112 is an apocalyptic number.

101220212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101220212112 is an abundant number, since it is smaller than the sum of its proper divisors (160265335968).

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

101220212112 is a wasteful number, since it uses less digits than its factorization.

101220212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108754430 (or 2108754424 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101220212112 its reverse (211212022101), we get a palindrome (312432234213).

The spelling of 101220212112 in words is "one hundred one billion, two hundred twenty million, two hundred twelve thousand, one hundred twelve".