20501045201 has 32 divisors (see below), whose sum is σ = 26627193600. Its totient is φ = 15328051200.

The previous prime is 20501045177. The next prime is 20501045203. The reversal of 20501045201 is 10254010502.

It is a de Polignac number, because none of the positive numbers 2^k-20501045201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20501045203) 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, 678545 + ... + 708113.

It is an arithmetic number, because the mean of its divisors is an integer number (832099800).

Almost surely, 2^20501045201 is an apocalyptic number.

It is an amenable number.

20501045201 is a deficient number, since it is larger than the sum of its proper divisors (6126148399).

20501045201 is a wasteful number, since it uses less digits than its factorization.

20501045201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30009.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 20501045201 its reverse (10254010502), we get a palindrome (30755055703).

The spelling of 20501045201 in words is "twenty billion, five hundred one million, forty-five thousand, two hundred one".