20332321401 has 32 divisors (see below), whose sum is σ = 33307176960. Its totient is φ = 10772770176.

The previous prime is 20332321397. The next prime is 20332321421. The reversal of 20332321401 is 10412323302.

It is not a de Polignac number, because 20332321401 - 2² = 20332321397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20332321421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523356 + ... + 560861.

It is an arithmetic number, because the mean of its divisors is an integer number (1040849280).

Almost surely, 2^20332321401 is an apocalyptic number.

20332321401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20332321401 is a deficient number, since it is larger than the sum of its proper divisors (12974855559).

20332321401 is a wasteful number, since it uses less digits than its factorization.

20332321401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084293.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20332321401 its reverse (10412323302), we get a palindrome (30744644703).

The spelling of 20332321401 in words is "twenty billion, three hundred thirty-two million, three hundred twenty-one thousand, four hundred one".