112122220221 has 40 divisors (see below), whose sum is σ = 183674608128. Its totient is φ = 67596984000.

The previous prime is 112122220211. The next prime is 112122220229. The reversal of 112122220221 is 122022221211.

It is a happy number.

112122220221 is a `hidden beast` number, since 11 + 212 + 2 + 220 + 221 = 666.

It is not a de Polignac number, because 112122220221 - 2⁶ = 112122220157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112122220194 and 112122220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122220229) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 159240 + ... + 499601.

Almost surely, 2^112122220221 is an apocalyptic number.

112122220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112122220221 is a deficient number, since it is larger than the sum of its proper divisors (71552387907).

112122220221 is a wasteful number, since it uses less digits than its factorization.

112122220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659055 (or 659046 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 112122220221 its reverse (122022221211), we get a palindrome (234144441432).

The spelling of 112122220221 in words is "one hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty-one".