1321222030 has 24 divisors (see below), whose sum is σ = 2391259752. Its totient is φ = 525602304.

The previous prime is 1321222013. The next prime is 1321222037. The reversal of 1321222030 is 302221231.

It is a junction number, because it is equal to n+sod(n) for n = 1321221995 and 1321222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370717 + ... + 374263.

It is an arithmetic number, because the mean of its divisors is an integer number (99635823).

Almost surely, 2^1321222030 is an apocalyptic number.

1321222030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321222030 is a deficient number, since it is larger than the sum of its proper divisors (1070037722).

1321222030 is an equidigital number, since it uses as much as digits as its factorization.

1321222030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3747 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1321222030 is about 36348.6179929856. The cubic root of 1321222030 is about 1097.2997211348.

Adding to 1321222030 its reverse (302221231), we get a palindrome (1623443261).

The spelling of 1321222030 in words is "one billion, three hundred twenty-one million, two hundred twenty-two thousand, thirty".