20112321403412 has 24 divisors (see below), whose sum is σ = 40229024613120. Its totient is φ = 8618627357280.

The previous prime is 20112321403403. The next prime is 20112321403423. The reversal of 20112321403412 is 21430412321102.

It is a happy number.

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, 38861612 + ... + 39375747.

It is an arithmetic number, because the mean of its divisors is an integer number (1676209358880).

Almost surely, 2^{20112321403412} is an apocalyptic number.

It is an amenable number.

20112321403412 is an abundant number, since it is smaller than the sum of its proper divisors (20116703209708).

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

20112321403412 is a wasteful number, since it uses less digits than its factorization.

20112321403412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78246551 (or 78246549 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20112321403412 its reverse (21430412321102), we get a palindrome (41542733724514).

The spelling of 20112321403412 in words is "twenty trillion, one hundred twelve billion, three hundred twenty-one million, four hundred three thousand, four hundred twelve".