21101102011122 has 64 divisors (see below), whose sum is σ = 48365723787264. Its totient is φ = 6012059296320.

The previous prime is 21101102011117. The next prime is 21101102011123. The reversal of 21101102011122 is 22111020110112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21101102011123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293307868 + ... + 293379800.

It is an arithmetic number, because the mean of its divisors is an integer number (755714434176).

Almost surely, 2^{21101102011122} is an apocalyptic number.

21101102011122 is an abundant number, since it is smaller than the sum of its proper divisors (27264621776142).

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

21101102011122 is a wasteful number, since it uses less digits than its factorization.

21101102011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91343.

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

Adding to 21101102011122 its reverse (22111020110112), we get a palindrome (43212122121234).

The spelling of 21101102011122 in words is "twenty-one trillion, one hundred one billion, one hundred two million, eleven thousand, one hundred twenty-two".