20321403212 has 48 divisors (see below), whose sum is σ = 39261729024. Its totient is φ = 9126360000.

The previous prime is 20321403209. The next prime is 20321403227. The reversal of 20321403212 is 21230412302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2230787 + ... + 2239877.

It is an arithmetic number, because the mean of its divisors is an integer number (817952688).

Almost surely, 2^20321403212 is an apocalyptic number.

20321403212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20321403212 is a deficient number, since it is larger than the sum of its proper divisors (18940325812).

20321403212 is a wasteful number, since it uses less digits than its factorization.

20321403212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9710 (or 9708 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20321403212 its reverse (21230412302), we get a palindrome (41551815514).

The spelling of 20321403212 in words is "twenty billion, three hundred twenty-one million, four hundred three thousand, two hundred twelve".