210001002201 has 12 divisors (see below), whose sum is σ = 313794601380. Its totient is φ = 135173058720.

The previous prime is 210001002199. The next prime is 210001002229. The reversal of 210001002201 is 102200100012.

It can be written as a sum of positive squares in 2 ways, for example, as 63081345600 + 146919656601 = 251160^2 + 383301^2 .

It is not a de Polignac number, because 210001002201 - 2¹ = 210001002199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (210001002271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402300510 + ... + 402301031.

It is an arithmetic number, because the mean of its divisors is an integer number (26149550115).

Almost surely, 2^210001002201 is an apocalyptic number.

It is an amenable number.

210001002201 is a deficient number, since it is larger than the sum of its proper divisors (103793599179).

210001002201 is a wasteful number, since it uses less digits than its factorization.

210001002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804601576 (or 804601573 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 210001002201 its reverse (102200100012), we get a palindrome (312201102213).

It can be divided in two parts, 21000 and 1002201, that added together give a palindrome (1023201).

The spelling of 210001002201 in words is "two hundred ten billion, one million, two thousand, two hundred one".