12220123021 has 8 divisors (see below), whose sum is σ = 12524738688. Its totient is φ = 11915820000.

The previous prime is 12220123009. The next prime is 12220123061. The reversal of 12220123021 is 12032102221.

It is a happy number.

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 12220123021 - 2⁵ = 12220122989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220122986 and 12220123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220123061) 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, 1996 + ... + 156346.

It is an arithmetic number, because the mean of its divisors is an integer number (1565592336).

Almost surely, 2^12220123021 is an apocalyptic number.

It is an amenable number.

12220123021 is a deficient number, since it is larger than the sum of its proper divisors (304615667).

12220123021 is a wasteful number, since it uses less digits than its factorization.

12220123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156323.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12220123021 its reverse (12032102221), we get a palindrome (24252225242).

The spelling of 12220123021 in words is "twelve billion, two hundred twenty million, one hundred twenty-three thousand, twenty-one".