11202212121 has 8 divisors (see below), whose sum is σ = 14979081600. Its totient is φ = 7446742032.

The previous prime is 11202212117. The next prime is 11202212141. The reversal of 11202212121 is 12121220211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11202212121 - 2² = 11202212117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11202212121.

It is not an unprimeable number, because it can be changed into a prime (11202212141) 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, 5348625 + ... + 5350718.

It is an arithmetic number, because the mean of its divisors is an integer number (1872385200).

Almost surely, 2^11202212121 is an apocalyptic number.

It is an amenable number.

11202212121 is a deficient number, since it is larger than the sum of its proper divisors (3776869479).

11202212121 is a wasteful number, since it uses less digits than its factorization.

11202212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10699695.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11202212121 its reverse (12121220211), we get a palindrome (23323432332).

The spelling of 11202212121 in words is "eleven billion, two hundred two million, two hundred twelve thousand, one hundred twenty-one".