1211103412432 has 20 divisors (see below), whose sum is σ = 2346613869600. Its totient is φ = 605525639648.

The previous prime is 1211103412399. The next prime is 1211103412501. The reversal of 1211103412432 is 2342143011121.

It is a junction number, because it is equal to n+sod(n) for n = 1211103412397 and 1211103412406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243078 + ... + 1991845.

It is an arithmetic number, because the mean of its divisors is an integer number (117330693480).

Almost surely, 2^{1211103412432} is an apocalyptic number.

It is an amenable number.

1211103412432 is a deficient number, since it is larger than the sum of its proper divisors (1135510457168).

1211103412432 is a wasteful number, since it uses less digits than its factorization.

1211103412432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258330 (or 3258324 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1211103412432 its reverse (2342143011121), we get a palindrome (3553246423553).

The spelling of 1211103412432 in words is "one trillion, two hundred eleven billion, one hundred three million, four hundred twelve thousand, four hundred thirty-two".