112222021 has 4 divisors (see below), whose sum is σ = 112331692. Its totient is φ = 112112352.

The previous prime is 112222013. The next prime is 112222031. The reversal of 112222021 is 120222211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120222211 = 379 ⋅317209.

It can be written as a sum of positive squares in 2 ways, for example, as 80299521 + 31922500 = 8961^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 112222021 - 2³ = 112222013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112221992 and 112222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112222001) 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, 53286 + ... + 55351.

It is an arithmetic number, because the mean of its divisors is an integer number (28082923).

Almost surely, 2^112222021 is an apocalyptic number.

It is an amenable number.

112222021 is a deficient number, since it is larger than the sum of its proper divisors (109671).

112222021 is a wasteful number, since it uses less digits than its factorization.

112222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109670.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 112222021 is about 10593.4895572705. The cubic root of 112222021 is about 482.3467558121.

Adding to 112222021 its reverse (120222211), we get a palindrome (232444232).

The spelling of 112222021 in words is "one hundred twelve million, two hundred twenty-two thousand, twenty-one".