210001021122 has 8 divisors (see below), whose sum is σ = 420002042256. Its totient is φ = 70000340372.

The previous prime is 210001021121. The next prime is 210001021127. The reversal of 210001021122 is 221120100012.

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

210001021122 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 210001021098 and 210001021107.

It is not an unprimeable number, because it can be changed into a prime (210001021121) 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, 17500085088 + ... + 17500085099.

It is an arithmetic number, because the mean of its divisors is an integer number (52500255282).

Almost surely, 2^210001021122 is an apocalyptic number.

210001021122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210001021122 is a wasteful number, since it uses less digits than its factorization.

210001021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35000170192.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210001021122 its reverse (221120100012), we get a palindrome (431121121134).

The spelling of 210001021122 in words is "two hundred ten billion, one million, twenty-one thousand, one hundred twenty-two".