1221312323302 has 8 divisors (see below), whose sum is σ = 1831987029816. Its totient is φ = 610649980032.

The previous prime is 1221312323279. The next prime is 1221312323323. The reversal of 1221312323302 is 2033232131221.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2839768 + ... + 3241435.

It is an arithmetic number, because the mean of its divisors is an integer number (228998378727).

Almost surely, 2^{1221312323302} is an apocalyptic number.

1221312323302 is a deficient number, since it is larger than the sum of its proper divisors (610674706514).

1221312323302 is a wasteful number, since it uses less digits than its factorization.

1221312323302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181622.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1221312323302 its reverse (2033232131221), we get a palindrome (3254544454523).

The spelling of 1221312323302 in words is "one trillion, two hundred twenty-one billion, three hundred twelve million, three hundred twenty-three thousand, three hundred two".