1122020321 has 4 divisors (see below), whose sum is σ = 1122634944. Its totient is φ = 1121405700.

The previous prime is 1122020239. The next prime is 1122020323. The reversal of 1122020321 is 1230202211.

It is a happy number.

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 1122020321 - 2¹⁸ = 1121758177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122020296 and 1122020305.

It is not an unprimeable number, because it can be changed into a prime (1122020323) 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, 304565 + ... + 308226.

It is an arithmetic number, because the mean of its divisors is an integer number (280658736).

Almost surely, 2^1122020321 is an apocalyptic number.

It is an amenable number.

1122020321 is a deficient number, since it is larger than the sum of its proper divisors (614623).

1122020321 is an equidigital number, since it uses as much as digits as its factorization.

1122020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614622.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1122020321 is about 33496.5717798105. The cubic root of 1122020321 is about 1039.1228800962.

Adding to 1122020321 its reverse (1230202211), we get a palindrome (2352222532).

The spelling of 1122020321 in words is "one billion, one hundred twenty-two million, twenty thousand, three hundred twenty-one".