1012321400432 has 40 divisors (see below), whose sum is σ = 1986430244256. Its totient is φ = 499729104896.

The previous prime is 1012321400429. The next prime is 1012321400437. The reversal of 1012321400432 is 2340041232101.

It is a junction number, because it is equal to n+sod(n) for n = 1012321400398 and 1012321400407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012321400437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624668 + ... + 1553979.

Almost surely, 2^{1012321400432} is an apocalyptic number.

It is an amenable number.

1012321400432 is a deficient number, since it is larger than the sum of its proper divisors (974108843824).

1012321400432 is a wasteful number, since it uses less digits than its factorization.

1012321400432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179025 (or 2179019 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1012321400432 its reverse (2340041232101), we get a palindrome (3352362632533).

The spelling of 1012321400432 in words is "one trillion, twelve billion, three hundred twenty-one million, four hundred thousand, four hundred thirty-two".