112100101121220 has 96 divisors (see below), whose sum is σ = 316822417486848. Its totient is φ = 29613172328832.

The previous prime is 112100101121191. The next prime is 112100101121227. The reversal of 112100101121220 is 22121101001211.

It is a happy number.

It is a super-2 number, since 2×112100101121220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 112100101121220.

It is not an unprimeable number, because it can be changed into a prime (112100101121227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255598639 + ... + 256036841.

It is an arithmetic number, because the mean of its divisors is an integer number (3300233515488).

Almost surely, 2^{112100101121220} is an apocalyptic number.

112100101121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112100101121220 is an abundant number, since it is smaller than the sum of its proper divisors (204722316365628).

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

112100101121220 is a wasteful number, since it uses less digits than its factorization.

112100101121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478169 (or 478167 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 112100101121220 its reverse (22121101001211), we get a palindrome (134221202122431).

The spelling of 112100101121220 in words is "one hundred twelve trillion, one hundred billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty".