1322222521 has 8 divisors (see below), whose sum is σ = 1399104000. Its totient is φ = 1246070160.

The previous prime is 1322222507. The next prime is 1322222579. The reversal of 1322222521 is 1252222231.

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

It is not a de Polignac number, because 1322222521 - 2¹³ = 1322214329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322222492 and 1322222501.

It is not an unprimeable number, because it can be changed into a prime (1322222581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178546 + ... + 185803.

It is an arithmetic number, because the mean of its divisors is an integer number (174888000).

Almost surely, 2^1322222521 is an apocalyptic number.

It is an amenable number.

1322222521 is a deficient number, since it is larger than the sum of its proper divisors (76881479).

1322222521 is a wasteful number, since it uses less digits than its factorization.

1322222521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364559.

The product of its digits is 960, while the sum is 22.

The square root of 1322222521 is about 36362.3778237892. The cubic root of 1322222521 is about 1097.5766267761.

Adding to 1322222521 its reverse (1252222231), we get a palindrome (2574444752).

The spelling of 1322222521 in words is "one billion, three hundred twenty-two million, two hundred twenty-two thousand, five hundred twenty-one".