1213213230042 has 16 divisors (see below), whose sum is σ = 2647010683872. Its totient is φ = 367640372720.

The previous prime is 1213213230041. The next prime is 1213213230049. The reversal of 1213213230042 is 2400323123121.

It is a super-2 number, since 2×1213213230042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213213229994 and 1213213230021.

It is not an unprimeable number, because it can be changed into a prime (1213213230041) 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, 9191009253 + ... + 9191009384.

It is an arithmetic number, because the mean of its divisors is an integer number (165438167742).

Almost surely, 2^{1213213230042} is an apocalyptic number.

1213213230042 is an abundant number, since it is smaller than the sum of its proper divisors (1433797453830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213213230042 is a wasteful number, since it uses less digits than its factorization.

1213213230042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382018653.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1213213230042 its reverse (2400323123121), we get a palindrome (3613536353163).

The spelling of 1213213230042 in words is "one trillion, two hundred thirteen billion, two hundred thirteen million, two hundred thirty thousand, forty-two".