210122221102001 has 4 divisors (see below), whose sum is σ = 226285468879092. Its totient is φ = 193958973324912.

The previous prime is 210122221101977. The next prime is 210122221102007. The reversal of 210122221102001 is 100201122221012.

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 89576665605025 + 120545555496976 = 9464495^2 + 10979324^2 .

It is a cyclic number.

It is not a de Polignac number, because 210122221102001 - 2²² = 210122216907697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122221102007) 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, 8081623888526 + ... + 8081623888551.

It is an arithmetic number, because the mean of its divisors is an integer number (56571367219773).

Almost surely, 2^{210122221102001} is an apocalyptic number.

It is an amenable number.

210122221102001 is a deficient number, since it is larger than the sum of its proper divisors (16163247777091).

210122221102001 is a wasteful number, since it uses less digits than its factorization.

210122221102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16163247777090.

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

Adding to 210122221102001 its reverse (100201122221012), we get a palindrome (310323343323013).

The spelling of 210122221102001 in words is "two hundred ten trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, one".