12202212121 has 16 divisors (see below), whose sum is σ = 13391680320. Its totient is φ = 11026206720.

The previous prime is 12202212073. The next prime is 12202212133. The reversal of 12202212121 is 12121220221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12202212121 - 2³¹ = 10054728473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202212095 and 12202212104.

It is not an unprimeable number, because it can be changed into a prime (12202242121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4675665 + ... + 4678273.

It is an arithmetic number, because the mean of its divisors is an integer number (836980020).

Almost surely, 2^12202212121 is an apocalyptic number.

12202212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12202212121 is a deficient number, since it is larger than the sum of its proper divisors (1189468199).

12202212121 is a wasteful number, since it uses less digits than its factorization.

12202212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12202212121 its reverse (12121220221), we get a palindrome (24323432342).

The spelling of 12202212121 in words is "twelve billion, two hundred two million, two hundred twelve thousand, one hundred twenty-one".