1211222343164 has 24 divisors (see below), whose sum is σ = 2126752911360. Its totient is φ = 603579044016.

The previous prime is 1211222343119. The next prime is 1211222343203. The reversal of 1211222343164 is 4613432221121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211222343164.

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, 14102519 + ... + 14188145.

It is an arithmetic number, because the mean of its divisors is an integer number (88614704640).

Almost surely, 2^{1211222343164} is an apocalyptic number.

It is an amenable number.

1211222343164 is a deficient number, since it is larger than the sum of its proper divisors (915530568196).

1211222343164 is a wasteful number, since it uses less digits than its factorization.

1211222343164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97457 (or 97455 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

Adding to 1211222343164 its reverse (4613432221121), we get a palindrome (5824654564285).

The spelling of 1211222343164 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, three hundred forty-three thousand, one hundred sixty-four".