22000021201 has 8 divisors (see below), whose sum is σ = 22171055400. Its totient is φ = 21829299072.

The previous prime is 22000021129. The next prime is 22000021231. The reversal of 22000021201 is 10212000022.

It can be written as a sum of positive squares in 4 ways, for example, as 4503081025 + 17496940176 = 67105^2 + 132276^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000021231) 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, 64531 + ... + 219463.

It is an arithmetic number, because the mean of its divisors is an integer number (2771381925).

Almost surely, 2^22000021201 is an apocalyptic number.

It is an amenable number.

22000021201 is a deficient number, since it is larger than the sum of its proper divisors (171034199).

22000021201 is a wasteful number, since it uses less digits than its factorization.

22000021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156035.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22000021201 its reverse (10212000022), we get a palindrome (32212021223).

The spelling of 22000021201 in words is "twenty-two billion, twenty-one thousand, two hundred one".