1122111021 has 8 divisors (see below), whose sum is σ = 1512959040. Its totient is φ = 739668512.

The previous prime is 1122111019. The next prime is 1122111037. The reversal of 1122111021 is 1201112211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1122111021 - 2¹ = 1122111019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122110988 and 1122111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122111121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2101065 + ... + 2101598.

It is an arithmetic number, because the mean of its divisors is an integer number (189119880).

Almost surely, 2^1122111021 is an apocalyptic number.

It is an amenable number.

1122111021 is a deficient number, since it is larger than the sum of its proper divisors (390848019).

1122111021 is an equidigital number, since it uses as much as digits as its factorization.

1122111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202755.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1122111021 is about 33497.9256223426. The cubic root of 1122111021 is about 1039.1508789669.

Adding to 1122111021 its reverse (1201112211), we get a palindrome (2323223232).

The spelling of 1122111021 in words is "one billion, one hundred twenty-two million, one hundred eleven thousand, twenty-one".