1221444131339 has 8 divisors (see below), whose sum is σ = 1255079316480. Its totient is φ = 1188046651176.

The previous prime is 1221444131333. The next prime is 1221444131377. The reversal of 1221444131339 is 9331314441221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221444131339 is a prime.

It is a super-3 number, since 3×1221444131339³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221444131333) 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, 59415827 + ... + 59436380.

It is an arithmetic number, because the mean of its divisors is an integer number (156884914560).

Almost surely, 2^{1221444131339} is an apocalyptic number.

1221444131339 is a deficient number, since it is larger than the sum of its proper divisors (33635185141).

1221444131339 is a wasteful number, since it uses less digits than its factorization.

1221444131339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118852489.

The product of its digits is 62208, while the sum is 38.

The spelling of 1221444131339 in words is "one trillion, two hundred twenty-one billion, four hundred forty-four million, one hundred thirty-one thousand, three hundred thirty-nine".