201002221212101 has 4 divisors (see below), whose sum is σ = 201200643938892. Its totient is φ = 200803798485312.

The previous prime is 201002221212097. The next prime is 201002221212119. The reversal of 201002221212101 is 101212122200102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1050573750625 + 199951647461476 = 1024975^2 + 14140426^2 .

It is a cyclic number.

It is not a de Polignac number, because 201002221212101 - 2² = 201002221212097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201002221212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002221212131) 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, 99211361876 + ... + 99211363901.

It is an arithmetic number, because the mean of its divisors is an integer number (50300160984723).

Almost surely, 2^{201002221212101} is an apocalyptic number.

It is an amenable number.

201002221212101 is a deficient number, since it is larger than the sum of its proper divisors (198422726791).

201002221212101 is a wasteful number, since it uses less digits than its factorization.

201002221212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198422726790.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201002221212101 its reverse (101212122200102), we get a palindrome (302214343412203).

The spelling of 201002221212101 in words is "two hundred one trillion, two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred one".