201000212021 has 16 divisors (see below), whose sum is σ = 230965739520. Its totient is φ = 171347868720.

The previous prime is 201000211987. The next prime is 201000212053. The reversal of 201000212021 is 120212000102.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-201000212021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201000211993 and 201000212011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000212071) 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, 7793870 + ... + 7819616.

It is an arithmetic number, because the mean of its divisors is an integer number (14435358720).

Almost surely, 2^201000212021 is an apocalyptic number.

It is an amenable number.

201000212021 is a deficient number, since it is larger than the sum of its proper divisors (29965527499).

201000212021 is a wasteful number, since it uses less digits than its factorization.

201000212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31784.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201000212021 its reverse (120212000102), we get a palindrome (321212212123).

The spelling of 201000212021 in words is "two hundred one billion, two hundred twelve thousand, twenty-one".