201000122121121 has 16 divisors (see below), whose sum is σ = 203064236926848. Its totient is φ = 198937470960000.

The previous prime is 201000122121091. The next prime is 201000122121163. The reversal of 201000122121121 is 121121221000102.

It is a cyclic number.

It is not a de Polignac number, because 201000122121121 - 2¹³ = 201000122112929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201000122121095 and 201000122121104.

It is not an unprimeable number, because it can be changed into a prime (201000122121181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4231825045 + ... + 4231872541.

It is an arithmetic number, because the mean of its divisors is an integer number (12691514807928).

Almost surely, 2^{201000122121121} is an apocalyptic number.

It is an amenable number.

201000122121121 is a deficient number, since it is larger than the sum of its proper divisors (2064114805727).

201000122121121 is a wasteful number, since it uses less digits than its factorization.

201000122121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61992.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201000122121121 its reverse (121121221000102), we get a palindrome (322121343121223).

The spelling of 201000122121121 in words is "two hundred one trillion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".