210001002122 has 8 divisors (see below), whose sum is σ = 315006547872. Its totient is φ = 104998819500.

The previous prime is 210001002109. The next prime is 210001002131. The reversal of 210001002122 is 221200100012.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678404 + ... + 938207.

It is an arithmetic number, because the mean of its divisors is an integer number (39375818484).

Almost surely, 2^210001002122 is an apocalyptic number.

210001002122 is a deficient number, since it is larger than the sum of its proper divisors (105005545750).

210001002122 is a wasteful number, since it uses less digits than its factorization.

210001002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681564.

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

Adding to 210001002122 its reverse (221200100012), we get a palindrome (431201102134).

The spelling of 210001002122 in words is "two hundred ten billion, one million, two thousand, one hundred twenty-two".