20001021002093 has 4 divisors (see below), whose sum is σ = 20016093362880. Its totient is φ = 19985948641308.

The previous prime is 20001021002071. The next prime is 20001021002191. The reversal of 20001021002093 is 39020012010002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20001021002093 - 2¹⁴ = 20001020985709 is a prime.

It is a super-2 number, since 2×20001021002093² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001021008093) 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, 7536178403 + ... + 7536181056.

It is an arithmetic number, because the mean of its divisors is an integer number (5004023340720).

Almost surely, 2^{20001021002093} is an apocalyptic number.

It is an amenable number.

20001021002093 is a deficient number, since it is larger than the sum of its proper divisors (15072360787).

20001021002093 is a wasteful number, since it uses less digits than its factorization.

20001021002093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15072360786.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20001021002093 its reverse (39020012010002), we get a palindrome (59021033012095).

The spelling of 20001021002093 in words is "twenty trillion, one billion, twenty-one million, two thousand, ninety-three".