1213222140344 has 16 divisors (see below), whose sum is σ = 2283854431320. Its totient is φ = 604194292000.

The previous prime is 1213222140341. The next prime is 1213222140371. The reversal of 1213222140344 is 4430412223121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213222140341) 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, 302095139 + ... + 302099154.

Almost surely, 2^{1213222140344} is an apocalyptic number.

It is an amenable number.

1213222140344 is a deficient number, since it is larger than the sum of its proper divisors (1070632290976).

1213222140344 is a wasteful number, since it uses less digits than its factorization.

1213222140344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604194550 (or 604194546 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1213222140344 its reverse (4430412223121), we get a palindrome (5643634363465).

The spelling of 1213222140344 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, one hundred forty thousand, three hundred forty-four".