20211002445 has 16 divisors (see below), whose sum is σ = 32348241792. Its totient is φ = 10775655360.

The previous prime is 20211002429. The next prime is 20211002447. The reversal of 20211002445 is 54420011202.

It is not a de Polignac number, because 20211002445 - 2⁴ = 20211002429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211002447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174177 + ... + 266006.

It is an arithmetic number, because the mean of its divisors is an integer number (2021765112).

Almost surely, 2^20211002445 is an apocalyptic number.

It is an amenable number.

20211002445 is a deficient number, since it is larger than the sum of its proper divisors (12137239347).

20211002445 is a wasteful number, since it uses less digits than its factorization.

20211002445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443252.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 20211002445 its reverse (54420011202), we get a palindrome (74631013647).

The spelling of 20211002445 in words is "twenty billion, two hundred eleven million, two thousand, four hundred forty-five".