1211142121432 has 16 divisors (see below), whose sum is σ = 2270905560000. Its totient is φ = 605567305440.

The previous prime is 1211142121331. The next prime is 1211142121459. The reversal of 1211142121432 is 2341212411121.

It is a junction number, because it is equal to n+sod(n) for n = 1211142121397 and 1211142121406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288569 + ... + 2020567.

It is an arithmetic number, because the mean of its divisors is an integer number (141931597500).

Almost surely, 2^{1211142121432} is an apocalyptic number.

It is an amenable number.

1211142121432 is a deficient number, since it is larger than the sum of its proper divisors (1059763438568).

1211142121432 is a wasteful number, since it uses less digits than its factorization.

1211142121432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938826 (or 938822 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

Adding to 1211142121432 its reverse (2341212411121), we get a palindrome (3552354532553).

The spelling of 1211142121432 in words is "one trillion, two hundred eleven billion, one hundred forty-two million, one hundred twenty-one thousand, four hundred thirty-two".