1122221011 has 4 divisors (see below), whose sum is σ = 1122414624. Its totient is φ = 1122027400.

The previous prime is 1122220973. The next prime is 1122221039. The reversal of 1122221011 is 1101222211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101222211 = 3119 ⋅353069.

It is a cyclic number.

It is not a de Polignac number, because 1122221011 - 2⁹ = 1122220499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122220982 and 1122221000.

It is not an unprimeable number, because it can be changed into a prime (1122224011) 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, 87835 + ... + 99796.

It is an arithmetic number, because the mean of its divisors is an integer number (280603656).

Almost surely, 2^1122221011 is an apocalyptic number.

1122221011 is a deficient number, since it is larger than the sum of its proper divisors (193613).

1122221011 is an equidigital number, since it uses as much as digits as its factorization.

1122221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193612.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1122221011 is about 33499.5673255641. The cubic root of 1122221011 is about 1039.1848305899.

Adding to 1122221011 its reverse (1101222211), we get a palindrome (2223443222).

The spelling of 1122221011 in words is "one billion, one hundred twenty-two million, two hundred twenty-one thousand, eleven".