1212401322 has 24 divisors (see below), whose sum is σ = 2865676320. Its totient is φ = 367394280.

The previous prime is 1212401321. The next prime is 1212401339. The reversal of 1212401322 is 2231042121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212401295 and 1212401304.

It is not an unprimeable number, because it can be changed into a prime (1212401321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3061422 + ... + 3061817.

It is an arithmetic number, because the mean of its divisors is an integer number (119403180).

Almost surely, 2^1212401322 is an apocalyptic number.

1212401322 is an abundant number, since it is smaller than the sum of its proper divisors (1653274998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212401322 is a wasteful number, since it uses less digits than its factorization.

1212401322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123258 (or 6123255 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1212401322 is about 34819.5537306267. The cubic root of 1212401322 is about 1066.3066894448.

Adding to 1212401322 its reverse (2231042121), we get a palindrome (3443443443).

The spelling of 1212401322 in words is "one billion, two hundred twelve million, four hundred one thousand, three hundred twenty-two".