210002000122001 has 8 divisors (see below), whose sum is σ = 217609794875880. Its totient is φ = 202418628466432.

The previous prime is 210002000121997. The next prime is 210002000122003. The reversal of 210002000122001 is 100221000200012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 115351380510976 + 94650619611025 = 10740176^2 + 9728855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210002000122001 - 2² = 210002000121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210002000122003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6105757070 + ... + 6105791463.

It is an arithmetic number, because the mean of its divisors is an integer number (27201224359485).

Almost surely, 2^{210002000122001} is an apocalyptic number.

It is an amenable number.

210002000122001 is a deficient number, since it is larger than the sum of its proper divisors (7607794753879).

210002000122001 is a wasteful number, since it uses less digits than its factorization.

210002000122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12211549155.

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

Adding to 210002000122001 its reverse (100221000200012), we get a palindrome (310223000322013).

The spelling of 210002000122001 in words is "two hundred ten trillion, two billion, one hundred twenty-two thousand, one".