12220112021 has 8 divisors (see below), whose sum is σ = 13161007104. Its totient is φ = 11279343600.

The previous prime is 12220111997. The next prime is 12220112027. The reversal of 12220112021 is 12021102221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220112021 - 2⁶ = 12220111957 is a prime.

It is a super-2 number, since 2×12220112021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220111987 and 12220112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220112027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289196 + ... + 328746.

It is an arithmetic number, because the mean of its divisors is an integer number (1645125888).

Almost surely, 2^12220112021 is an apocalyptic number.

It is an amenable number.

12220112021 is a deficient number, since it is larger than the sum of its proper divisors (940895083).

12220112021 is a wasteful number, since it uses less digits than its factorization.

12220112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63331.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12220112021 its reverse (12021102221), we get a palindrome (24241214242).

The spelling of 12220112021 in words is "twelve billion, two hundred twenty million, one hundred twelve thousand, twenty-one".