11202222232121 has 4 divisors (see below), whose sum is σ = 11689275372672. Its totient is φ = 10715169091572.

The previous prime is 11202222232093. The next prime is 11202222232129. The reversal of 11202222232121 is 12123222220211.

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 11202222232121 - 2³⁴ = 11185042362937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 487053140527 = 11202222232121 / (1 + 1 + 2 + 0 + 2 + 2 + 2 + 2 + 2 + 3 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11202222232129) 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, 243526570241 + ... + 243526570286.

It is an arithmetic number, because the mean of its divisors is an integer number (2922318843168).

Almost surely, 2^{11202222232121} is an apocalyptic number.

It is an amenable number.

11202222232121 is a deficient number, since it is larger than the sum of its proper divisors (487053140551).

11202222232121 is an equidigital number, since it uses as much as digits as its factorization.

11202222232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487053140550.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11202222232121 its reverse (12123222220211), we get a palindrome (23325444452332).

The spelling of 11202222232121 in words is "eleven trillion, two hundred two billion, two hundred twenty-two million, two hundred thirty-two thousand, one hundred twenty-one".