201000000102221 has 4 divisors (see below), whose sum is σ = 209739130541472. Its totient is φ = 192260869662972.

The previous prime is 201000000102199. The next prime is 201000000102269. The reversal of 201000000102221 is 122201000000102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201000000102221 - 2⁶ = 201000000102157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000000102721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4369565219591 + ... + 4369565219636.

It is an arithmetic number, because the mean of its divisors is an integer number (52434782635368).

Almost surely, 2^{201000000102221} is an apocalyptic number.

It is an amenable number.

201000000102221 is a deficient number, since it is larger than the sum of its proper divisors (8739130439251).

201000000102221 is an equidigital number, since it uses as much as digits as its factorization.

201000000102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8739130439250.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201000000102221 its reverse (122201000000102), we get a palindrome (323201000102323).

The spelling of 201000000102221 in words is "two hundred one trillion, one hundred two thousand, two hundred twenty-one".