20000012321 has 8 divisors (see below), whose sum is σ = 21374396640. Its totient is φ = 18647618368.

The previous prime is 20000012309. The next prime is 20000012341. The reversal of 20000012321 is 12321000002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000012321 - 2¹⁴ = 19999995937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000012341) 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, 5495711 + ... + 5499348.

It is an arithmetic number, because the mean of its divisors is an integer number (2671799580).

Almost surely, 2^20000012321 is an apocalyptic number.

It is an amenable number.

20000012321 is a deficient number, since it is larger than the sum of its proper divisors (1374384319).

20000012321 is a wasteful number, since it uses less digits than its factorization.

20000012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10995183.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20000012321 its reverse (12321000002), we get a palindrome (32321012323).

The spelling of 20000012321 in words is "twenty billion, twelve thousand, three hundred twenty-one".