1122223021 has 2 divisors, whose sum is σ = 1122223022. Its totient is φ = 1122223020.

The previous prime is 1122223009. The next prime is 1122223027. The reversal of 1122223021 is 1203222211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103169796 + 19053225 = 33214^2 + 4365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122223021 - 2¹¹ = 1122220973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122222986 and 1122223004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122223027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561111510 + 561111511.

It is an arithmetic number, because the mean of its divisors is an integer number (561111511).

Almost surely, 2^1122223021 is an apocalyptic number.

It is an amenable number.

1122223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122223021 is an equidigital number, since it uses as much as digits as its factorization.

1122223021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1122223021 is about 33499.5973259381. The cubic root of 1122223021 is about 1039.1854510144.

Adding to 1122223021 its reverse (1203222211), we get a palindrome (2325445232).

It can be divided in two parts, 11222 and 23021, that added together give a palindrome (34243).

The spelling of 1122223021 in words is "one billion, one hundred twenty-two million, two hundred twenty-three thousand, twenty-one".