10021002201 has 18 divisors (see below), whose sum is σ = 16838011242. Its totient is φ = 5726286720.

The previous prime is 10021002151. The next prime is 10021002239. The reversal of 10021002201 is 10220012001.

It can be written as a sum of positive squares in only one way, i.e., 5617352601 + 4403649600 = 74949^2 + 66360^2 .

It is not a de Polignac number, because 10021002201 - 2¹⁸ = 10020740057 is a prime.

It is a super-2 number, since 2×10021002201² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10021002241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11361240 + ... + 11362121.

It is an arithmetic number, because the mean of its divisors is an integer number (935445069).

Almost surely, 2^10021002201 is an apocalyptic number.

It is an amenable number.

10021002201 is a deficient number, since it is larger than the sum of its proper divisors (6817009041).

10021002201 is a wasteful number, since it uses less digits than its factorization.

10021002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22723381 (or 22723371 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10021002201 its reverse (10220012001), we get a palindrome (20241014202).

The spelling of 10021002201 in words is "ten billion, twenty-one million, two thousand, two hundred one".