1000221000201 has 24 divisors (see below), whose sum is σ = 1483093697280. Its totient is φ = 649354470336.

The previous prime is 1000221000173. The next prime is 1000221000209. The reversal of 1000221000201 is 1020001220001.

It is not a de Polignac number, because 1000221000201 - 2¹⁷ = 1000220869129 is a prime.

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 (1000221000209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9583581 + ... + 9687386.

It is an arithmetic number, because the mean of its divisors is an integer number (61795570720).

Almost surely, 2^{1000221000201} is an apocalyptic number.

It is an amenable number.

1000221000201 is a deficient number, since it is larger than the sum of its proper divisors (482872697079).

1000221000201 is a wasteful number, since it uses less digits than its factorization.

1000221000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19271125 (or 19271122 counting only the distinct ones).

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

Adding to 1000221000201 its reverse (1020001220001), we get a palindrome (2020222220202).

The spelling of 1000221000201 in words is "one trillion, two hundred twenty-one million, two hundred one", and thus it is an aban number.