1211343430422 has 16 divisors (see below), whose sum is σ = 2506227787440. Its totient is φ = 389857655712.

The previous prime is 1211343430417. The next prime is 1211343430459. The reversal of 1211343430422 is 2240343431121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211343430422.

It is a congruent number.

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, 3480871753 + ... + 3480872100.

It is an arithmetic number, because the mean of its divisors is an integer number (156639236715).

Almost surely, 2^{1211343430422} is an apocalyptic number.

1211343430422 is an abundant number, since it is smaller than the sum of its proper divisors (1294884357018).

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

1211343430422 is a wasteful number, since it uses less digits than its factorization.

1211343430422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6961743887.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1211343430422 its reverse (2240343431121), we get a palindrome (3451686861543).

The spelling of 1211343430422 in words is "one trillion, two hundred eleven billion, three hundred forty-three million, four hundred thirty thousand, four hundred twenty-two".