12212221203 has 40 divisors (see below), whose sum is σ = 22452872288. Its totient is φ = 6441607296.

The previous prime is 12212221193. The next prime is 12212221213. The reversal of 12212221203 is 30212221221.

It is an interprime number because it is at equal distance from previous prime (12212221193) and next prime (12212221213).

It is not a de Polignac number, because 12212221203 - 2¹³ = 12212213011 is a prime.

It is a super-2 number, since 2×12212221203² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12212221213) 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, 821026 + ... + 835767.

Almost surely, 2^12212221203 is an apocalyptic number.

12212221203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12212221203 is a deficient number, since it is larger than the sum of its proper divisors (10240651085).

12212221203 is a wasteful number, since it uses less digits than its factorization.

12212221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656825 (or 1656816 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12212221203 its sum of digits (18), we get a palindrome (12212221221).

Adding to 12212221203 its reverse (30212221221), we get a palindrome (42424442424).

The spelling of 12212221203 in words is "twelve billion, two hundred twelve million, two hundred twenty-one thousand, two hundred three".