12213343155442 has 16 divisors (see below), whose sum is σ = 21522814512192. Its totient is φ = 5124479645520.

The previous prime is 12213343155437. The next prime is 12213343155451. The reversal of 12213343155442 is 24455134331221.

It is a junction number, because it is equal to n+sod(n) for n = 12213343155395 and 12213343155404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21351998238 + ... + 21351998809.

It is an arithmetic number, because the mean of its divisors is an integer number (1345175907012).

Almost surely, 2^{12213343155442} is an apocalyptic number.

12213343155442 is a deficient number, since it is larger than the sum of its proper divisors (9309471356750).

12213343155442 is a wasteful number, since it uses less digits than its factorization.

12213343155442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42703997073.

The product of its digits is 345600, while the sum is 40.

Adding to 12213343155442 its reverse (24455134331221), we get a palindrome (36668477486663).

The spelling of 12213343155442 in words is "twelve trillion, two hundred thirteen billion, three hundred forty-three million, one hundred fifty-five thousand, four hundred forty-two".