20001021210096 has 40 divisors (see below), whose sum is σ = 52768651709184. Its totient is φ = 6525155855040.

The previous prime is 20001021210061. The next prime is 20001021210097. The reversal of 20001021210096 is 69001212010002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001021210097) 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, 4432848190 + ... + 4432852701.

Almost surely, 2^{20001021210096} is an apocalyptic number.

It is an amenable number.

20001021210096 is an abundant number, since it is smaller than the sum of its proper divisors (32767630499088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001021210096 is a wasteful number, since it uses less digits than its factorization.

20001021210096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8865700949 (or 8865700943 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 20001021210096 its reverse (69001212010002), we get a palindrome (89002233220098).

The spelling of 20001021210096 in words is "twenty trillion, one billion, twenty-one million, two hundred ten thousand, ninety-six".