21120122010012 has 48 divisors (see below), whose sum is σ = 54925394711040. Its totient is φ = 6277187964672.

The previous prime is 21120122009983. The next prime is 21120122010037. The reversal of 21120122010012 is 21001022102112.

It is a junction number, because it is equal to n+sod(n) for n = 21120122009973 and 21120122010000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2724470068 + ... + 2724477819.

It is an arithmetic number, because the mean of its divisors is an integer number (1144279056480).

Almost surely, 2^{21120122010012} is an apocalyptic number.

It is an amenable number.

21120122010012 is an abundant number, since it is smaller than the sum of its proper divisors (33805272701028).

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

21120122010012 is a wasteful number, since it uses less digits than its factorization.

21120122010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448947930 (or 5448947928 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21120122010012 its reverse (21001022102112), we get a palindrome (42121144112124).

The spelling of 21120122010012 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty-two million, ten thousand, twelve".