20002000321421 has 8 divisors (see below), whose sum is σ = 20159659269120. Its totient is φ = 19844343919008.

The previous prime is 20002000321403. The next prime is 20002000321427. The reversal of 20002000321421 is 12412300020002.

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 20002000321421 - 2³⁸ = 19727122414477 is a prime.

It is a super-2 number, since 2×20002000321421² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20002000321421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002000321427) 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, 17078210 + ... + 18211788.

It is an arithmetic number, because the mean of its divisors is an integer number (2519957408640).

Almost surely, 2^{20002000321421} is an apocalyptic number.

It is an amenable number.

20002000321421 is a deficient number, since it is larger than the sum of its proper divisors (157658947699).

20002000321421 is a wasteful number, since it uses less digits than its factorization.

20002000321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272643.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20002000321421 its reverse (12412300020002), we get a palindrome (32414300341423).

The spelling of 20002000321421 in words is "twenty trillion, two billion, three hundred twenty-one thousand, four hundred twenty-one".