201000201221121 has 16 divisors (see below), whose sum is σ = 279654655248384. Its totient is φ = 128173032394704.

The previous prime is 201000201221119. The next prime is 201000201221123. The reversal of 201000201221121 is 121122102000102.

It is an interprime number because it is at equal distance from previous prime (201000201221119) and next prime (201000201221123).

It is not a de Polignac number, because 201000201221121 - 2¹ = 201000201221119 is a prime.

It is a super-2 number, since 2×201000201221121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201000201221121.

It is not an unprimeable number, because it can be changed into a prime (201000201221123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2587081 + ... + 20216166.

It is an arithmetic number, because the mean of its divisors is an integer number (17478415953024).

Almost surely, 2^{201000201221121} is an apocalyptic number.

It is an amenable number.

201000201221121 is a deficient number, since it is larger than the sum of its proper divisors (78654454027263).

201000201221121 is a wasteful number, since it uses less digits than its factorization.

201000201221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22931020.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201000201221121 its reverse (121122102000102), we get a palindrome (322122303221223).

The spelling of 201000201221121 in words is "two hundred one trillion, two hundred one million, two hundred twenty-one thousand, one hundred twenty-one".