11012220212221 has 4 divisors (see below), whose sum is σ = 11014728123744. Its totient is φ = 11009712300700.

The previous prime is 11012220212131. The next prime is 11012220212249. The reversal of 11012220212221 is 12221202221011.

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 11012220212221 - 2¹⁵ = 11012220179453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012220210221) 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, 1253949175 + ... + 1253957956.

It is an arithmetic number, because the mean of its divisors is an integer number (2753682030936).

Almost surely, 2^{11012220212221} is an apocalyptic number.

It is an amenable number.

11012220212221 is a deficient number, since it is larger than the sum of its proper divisors (2507911523).

11012220212221 is an equidigital number, since it uses as much as digits as its factorization.

11012220212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507911522.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11012220212221 its reverse (12221202221011), we get a palindrome (23233422433232).

The spelling of 11012220212221 in words is "eleven trillion, twelve billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-one".