201000200221221 has 16 divisors (see below), whose sum is σ = 276645827258880. Its totient is φ = 129677365532160.

The previous prime is 201000200221157. The next prime is 201000200221291. The reversal of 201000200221221 is 122122002000102.

It is not a de Polignac number, because 201000200221221 - 2⁶ = 201000200221157 is a prime.

It is a super-3 number, since 3×201000200221221³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201000200221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000200221291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103164445 + ... + 105094733.

It is an arithmetic number, because the mean of its divisors is an integer number (17290364203680).

Almost surely, 2^{201000200221221} is an apocalyptic number.

It is an amenable number.

201000200221221 is a deficient number, since it is larger than the sum of its proper divisors (75645627037659).

201000200221221 is a wasteful number, since it uses less digits than its factorization.

201000200221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049996.

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

Adding to 201000200221221 its reverse (122122002000102), we get a palindrome (323122202221323).

The spelling of 201000200221221 in words is "two hundred one trillion, two hundred million, two hundred twenty-one thousand, two hundred twenty-one".