201000122200221 has 32 divisors (see below), whose sum is σ = 284064617318400. Its totient is φ = 125984574063360.

The previous prime is 201000122200201. The next prime is 201000122200237. The reversal of 201000122200221 is 122002221000102.

It is not a de Polignac number, because 201000122200221 - 2⁷ = 201000122200093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201000122200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000122200201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190407900 + ... + 191460618.

It is an arithmetic number, because the mean of its divisors is an integer number (8877019291200).

Almost surely, 2^{201000122200221} is an apocalyptic number.

It is an amenable number.

201000122200221 is a deficient number, since it is larger than the sum of its proper divisors (83064495118179).

201000122200221 is a wasteful number, since it uses less digits than its factorization.

201000122200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056689.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201000122200221 its reverse (122002221000102), we get a palindrome (323002343200323).

The spelling of 201000122200221 in words is "two hundred one trillion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".