20321113412 has 12 divisors (see below), whose sum is σ = 35627685996. Its totient is φ = 10141774560.

The previous prime is 20321113411. The next prime is 20321113429. The reversal of 20321113412 is 21431112302.

It can be written as a sum of positive squares in 2 ways, for example, as 13671689476 + 6649423936 = 116926^2 + 81544^2 .

It is not an unprimeable number, because it can be changed into a prime (20321113411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4693103 + ... + 4697430.

It is an arithmetic number, because the mean of its divisors is an integer number (2968973833).

Almost surely, 2^20321113412 is an apocalyptic number.

It is an amenable number.

20321113412 is a deficient number, since it is larger than the sum of its proper divisors (15306572584).

20321113412 is a wasteful number, since it uses less digits than its factorization.

20321113412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9391078 (or 9391076 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20321113412 its reverse (21431112302), we get a palindrome (41752225714).

The spelling of 20321113412 in words is "twenty billion, three hundred twenty-one million, one hundred thirteen thousand, four hundred twelve".