11022202221221 has 4 divisors (see below), whose sum is σ = 11022209523072. Its totient is φ = 11022194919372.

The previous prime is 11022202221193. The next prime is 11022202221263. The reversal of 11022202221221 is 12212220222011.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11022202221221 - 2⁶ = 11022202221157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11022202221193 and 11022202221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022202221281) 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, 452885 + ... + 4716938.

It is an arithmetic number, because the mean of its divisors is an integer number (2755552380768).

Almost surely, 2^{11022202221221} is an apocalyptic number.

It is an amenable number.

11022202221221 is a deficient number, since it is larger than the sum of its proper divisors (7301851).

11022202221221 is an equidigital number, since it uses as much as digits as its factorization.

11022202221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7301850.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11022202221221 its reverse (12212220222011), we get a palindrome (23234422443232).

The spelling of 11022202221221 in words is "eleven trillion, twenty-two billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".