112100121011221 has 24 divisors (see below), whose sum is σ = 129083581062144. Its totient is φ = 95361792272640.

The previous prime is 112100121011213. The next prime is 112100121011233. The reversal of 112100121011221 is 122110121001211.

It is not a de Polignac number, because 112100121011221 - 2³ = 112100121011213 is a prime.

It is a super-3 number, since 3×112100121011221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112100121011195 and 112100121011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112100121041221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250449195 + ... + 250896391.

It is an arithmetic number, because the mean of its divisors is an integer number (5378482544256).

Almost surely, 2^{112100121011221} is an apocalyptic number.

It is an amenable number.

112100121011221 is a deficient number, since it is larger than the sum of its proper divisors (16983460050923).

112100121011221 is an frugal number, since it uses more digits than its factorization.

112100121011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448261 (or 447828 counting only the distinct ones).

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

Adding to 112100121011221 its reverse (122110121001211), we get a palindrome (234210242012432).

The spelling of 112100121011221 in words is "one hundred twelve trillion, one hundred billion, one hundred twenty-one million, eleven thousand, two hundred twenty-one".