101220020112 has 80 divisors (see below), whose sum is σ = 265881607488. Its totient is φ = 33173168640.

The previous prime is 101220020107. The next prime is 101220020141. The reversal of 101220020112 is 211020022101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9021418 + ... + 9032630.

Almost surely, 2^101220020112 is an apocalyptic number.

101220020112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101220020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132940803744).

101220020112 is an abundant number, since it is smaller than the sum of its proper divisors (164661587376).

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

101220020112 is a wasteful number, since it uses less digits than its factorization.

101220020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14368 (or 14362 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101220020112 its reverse (211020022101), we get a palindrome (312240042213).

The spelling of 101220020112 in words is "one hundred one billion, two hundred twenty million, twenty thousand, one hundred twelve".