201001021002221 has 4 divisors (see below), whose sum is σ = 219273841093344. Its totient is φ = 182728200911100.

The previous prime is 201001021002167. The next prime is 201001021002247. The reversal of 201001021002221 is 122200120100102.

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 201001021002221 - 2³⁴ = 200983841133037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201001021002196 and 201001021002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001021002281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136410045545 + ... + 9136410045566.

It is an arithmetic number, because the mean of its divisors is an integer number (54818460273336).

Almost surely, 2^{201001021002221} is an apocalyptic number.

It is an amenable number.

201001021002221 is a deficient number, since it is larger than the sum of its proper divisors (18272820091123).

201001021002221 is a wasteful number, since it uses less digits than its factorization.

201001021002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18272820091122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201001021002221 its reverse (122200120100102), we get a palindrome (323201141102323).

The spelling of 201001021002221 in words is "two hundred one trillion, one billion, twenty-one million, two thousand, two hundred twenty-one".