22050721285 has 16 divisors (see below), whose sum is σ = 26966617200. Its totient is φ = 17303569920.

The previous prime is 22050721283. The next prime is 22050721313. The reversal of 22050721285 is 58212705022.

It can be written as a sum of positive squares in 8 ways, for example, as 4924811329 + 17125909956 = 70177^2 + 130866^2 .

It is not a de Polignac number, because 22050721285 - 2¹ = 22050721283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22050721285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22050721283) 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, 1551391 + ... + 1565539.

It is an arithmetic number, because the mean of its divisors is an integer number (1685413575).

Almost surely, 2^22050721285 is an apocalyptic number.

It is an amenable number.

22050721285 is a deficient number, since it is larger than the sum of its proper divisors (4915895915).

22050721285 is a wasteful number, since it uses less digits than its factorization.

22050721285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20088.

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 22050721285 in words is "twenty-two billion, fifty million, seven hundred twenty-one thousand, two hundred eighty-five".