1221244141342 has 8 divisors (see below), whose sum is σ = 1834273397232. Its totient is φ = 609819675600.

The previous prime is 1221244141333. The next prime is 1221244141343. The reversal of 1221244141342 is 2431414421221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221244141343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401195634 + ... + 401198677.

It is an arithmetic number, because the mean of its divisors is an integer number (229284174654).

Almost surely, 2^{1221244141342} is an apocalyptic number.

1221244141342 is a deficient number, since it is larger than the sum of its proper divisors (613029255890).

1221244141342 is an equidigital number, since it uses as much as digits as its factorization.

1221244141342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802395074.

The product of its digits is 12288, while the sum is 31.

Adding to 1221244141342 its reverse (2431414421221), we get a palindrome (3652658562563).

The spelling of 1221244141342 in words is "one trillion, two hundred twenty-one billion, two hundred forty-four million, one hundred forty-one thousand, three hundred forty-two".