201000122121021 has 8 divisors (see below), whose sum is σ = 268001360094624. Its totient is φ = 133999482780720.

The previous prime is 201000122121011. The next prime is 201000122121059. The reversal of 201000122121021 is 120121221000102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201000122121021 - 2¹⁴ = 201000122104637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000122121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148874286 + ... + 150218351.

It is an arithmetic number, because the mean of its divisors is an integer number (33500170011828).

Almost surely, 2^{201000122121021} is an apocalyptic number.

It is an amenable number.

201000122121021 is a deficient number, since it is larger than the sum of its proper divisors (67001237973603).

201000122121021 is a wasteful number, since it uses less digits than its factorization.

201000122121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299316651.

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

Adding to 201000122121021 its reverse (120121221000102), we get a palindrome (321121343121123).

The spelling of 201000122121021 in words is "two hundred one trillion, one hundred twenty-two million, one hundred twenty-one thousand, twenty-one".