1213420112242 has 8 divisors (see below), whose sum is σ = 1960140181356. Its totient is φ = 560040051792.

The previous prime is 1213420112239. The next prime is 1213420112243. The reversal of 1213420112242 is 2422110243121.

It can be written as a sum of positive squares in 2 ways, for example, as 1212066681721 + 1353430521 = 1100939^2 + 36789^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1213420112243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23335002133 + ... + 23335002184.

Almost surely, 2^{1213420112242} is an apocalyptic number.

1213420112242 is a deficient number, since it is larger than the sum of its proper divisors (746720069114).

1213420112242 is a wasteful number, since it uses less digits than its factorization.

1213420112242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46670004332.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1213420112242 its reverse (2422110243121), we get a palindrome (3635530355363).

The spelling of 1213420112242 in words is "one trillion, two hundred thirteen billion, four hundred twenty million, one hundred twelve thousand, two hundred forty-two".