12203422121 has 4 divisors (see below), whose sum is σ = 13312824144. Its totient is φ = 11094020100.

The previous prime is 12203422073. The next prime is 12203422123. The reversal of 12203422121 is 12122430221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12203422121 - 2⁶ = 12203422057 is a prime.

It is a super-2 number, since 2×12203422121² (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 = 12203422093 and 12203422102.

It is not an unprimeable number, because it can be changed into a prime (12203422123) 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, 554700995 + ... + 554701016.

It is an arithmetic number, because the mean of its divisors is an integer number (3328206036).

Almost surely, 2^12203422121 is an apocalyptic number.

12203422121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12203422121 is a deficient number, since it is larger than the sum of its proper divisors (1109402023).

12203422121 is a wasteful number, since it uses less digits than its factorization.

12203422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109402022.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12203422121 its reverse (12122430221), we get a palindrome (24325852342).

The spelling of 12203422121 in words is "twelve billion, two hundred three million, four hundred twenty-two thousand, one hundred twenty-one".