201002101112021 has 4 divisors (see below), whose sum is σ = 219275019394944. Its totient is φ = 182729182829100.

The previous prime is 201002101112011. The next prime is 201002101112051. The reversal of 201002101112021 is 120211101200102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201002101112021 - 2¹⁸ = 201002100849877 is a prime.

It is a super-2 number, since 2×201002101112021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002101111987 and 201002101112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002101112011) 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 3 ways as a sum of consecutive naturals, for example, 9136459141445 + ... + 9136459141466.

It is an arithmetic number, because the mean of its divisors is an integer number (54818754848736).

Almost surely, 2^{201002101112021} is an apocalyptic number.

It is an amenable number.

201002101112021 is a deficient number, since it is larger than the sum of its proper divisors (18272918282923).

201002101112021 is a wasteful number, since it uses less digits than its factorization.

201002101112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18272918282922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201002101112021 its reverse (120211101200102), we get a palindrome (321213202312123).

The spelling of 201002101112021 in words is "two hundred one trillion, two billion, one hundred one million, one hundred twelve thousand, twenty-one".