11022220212121 has 4 divisors (see below), whose sum is σ = 11025893064244. Its totient is φ = 11018547360000.

The previous prime is 11022220212109. The next prime is 11022220212139. The reversal of 11022220212121 is 12121202222011.

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 4280740310025 + 6741479902096 = 2068995^2 + 2596436^2 .

It is a cyclic number.

It is not a de Polignac number, because 11022220212121 - 2¹⁹ = 11022219687833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11022220212721) 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, 1836421560 + ... + 1836427561.

It is an arithmetic number, because the mean of its divisors is an integer number (2756473266061).

Almost surely, 2^{11022220212121} is an apocalyptic number.

It is an amenable number.

11022220212121 is a deficient number, since it is larger than the sum of its proper divisors (3672852123).

11022220212121 is an equidigital number, since it uses as much as digits as its factorization.

11022220212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672852122.

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

Adding to 11022220212121 its reverse (12121202222011), we get a palindrome (23143422434132).

The spelling of 11022220212121 in words is "eleven trillion, twenty-two billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty-one".