20216211045 has 16 divisors (see below), whose sum is σ = 34248640320. Its totient is φ = 10147745024.

The previous prime is 20216211019. The next prime is 20216211047. The reversal of 20216211045 is 54011261202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20216211045 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20216211047) 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, 39639375 + ... + 39639884.

It is an arithmetic number, because the mean of its divisors is an integer number (2140540020).

Almost surely, 2^20216211045 is an apocalyptic number.

It is an amenable number.

20216211045 is a deficient number, since it is larger than the sum of its proper divisors (14032429275).

20216211045 is a wasteful number, since it uses less digits than its factorization.

20216211045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79279284.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 20216211045 its reverse (54011261202), we get a palindrome (74227472247).

The spelling of 20216211045 in words is "twenty billion, two hundred sixteen million, two hundred eleven thousand, forty-five".