12220121003 has 4 divisors (see below), whose sum is σ = 12220366800. Its totient is φ = 12219875208.

The previous prime is 12220120973. The next prime is 12220121041. The reversal of 12220121003 is 30012102221.

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: 30012102221 = 5591 ⋅5367931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220121003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220121093) 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, 19103 + ... + 157496.

It is an arithmetic number, because the mean of its divisors is an integer number (3055091700).

Almost surely, 2^12220121003 is an apocalyptic number.

12220121003 is a deficient number, since it is larger than the sum of its proper divisors (245797).

12220121003 is an equidigital number, since it uses as much as digits as its factorization.

12220121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245796.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12220121003 its reverse (30012102221), we get a palindrome (42232223224).

The spelling of 12220121003 in words is "twelve billion, two hundred twenty million, one hundred twenty-one thousand, three".