21010110121122 has 8 divisors (see below), whose sum is σ = 42020220242256. Its totient is φ = 7003370040372.

The previous prime is 21010110121057. The next prime is 21010110121159. The reversal of 21010110121122 is 22112101101012.

It is a happy number.

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

21010110121122 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750842510088 + ... + 1750842510099.

It is an arithmetic number, because the mean of its divisors is an integer number (5252527530282).

Almost surely, 2^{21010110121122} is an apocalyptic number.

21010110121122 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.

21010110121122 is a wasteful number, since it uses less digits than its factorization.

21010110121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501685020192.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21010110121122 its reverse (22112101101012), we get a palindrome (43122211222134).

The spelling of 21010110121122 in words is "twenty-one trillion, ten billion, one hundred ten million, one hundred twenty-one thousand, one hundred twenty-two".