11022212212021 has 4 divisors (see below), whose sum is σ = 11023526109100. Its totient is φ = 11020898314944.

The previous prime is 11022212212007. The next prime is 11022212212051. The reversal of 11022212212021 is 12021221222011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4172010502500 + 6850201709521 = 2042550^2 + 2617289^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022212212021 - 2¹⁹ = 11022211687733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11022212212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022212212001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656935956 + ... + 656952733.

It is an arithmetic number, because the mean of its divisors is an integer number (2755881527275).

Almost surely, 2^{11022212212021} is an apocalyptic number.

It is an amenable number.

11022212212021 is a deficient number, since it is larger than the sum of its proper divisors (1313897079).

11022212212021 is an equidigital number, since it uses as much as digits as its factorization.

11022212212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313897078.

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

Adding to 11022212212021 its reverse (12021221222011), we get a palindrome (23043433434032).

The spelling of 11022212212021 in words is "eleven trillion, twenty-two billion, two hundred twelve million, two hundred twelve thousand, twenty-one".