1222400133322 has 4 divisors (see below), whose sum is σ = 1833600199986. Its totient is φ = 611200066660.

The previous prime is 1222400133319. The next prime is 1222400133347. The reversal of 1222400133322 is 2233310042221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 998982259081 + 223417874241 = 999491^2 + 472671^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305600033329 + ... + 305600033332.

Almost surely, 2^{1222400133322} is an apocalyptic number.

1222400133322 is a deficient number, since it is larger than the sum of its proper divisors (611200066664).

1222400133322 is an equidigital number, since it uses as much as digits as its factorization.

1222400133322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611200066663.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1222400133322 its reverse (2233310042221), we get a palindrome (3455710175543).

The spelling of 1222400133322 in words is "one trillion, two hundred twenty-two billion, four hundred million, one hundred thirty-three thousand, three hundred twenty-two".