21010112111022 has 32 divisors (see below), whose sum is σ = 43470232951680. Its totient is φ = 6761714087520.

The previous prime is 21010112110979. The next prime is 21010112111029. The reversal of 21010112111022 is 22011121101012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21010112110992 and 21010112111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010112111029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5997453 + ... + 8831175.

It is an arithmetic number, because the mean of its divisors is an integer number (1358444779740).

Almost surely, 2^{21010112111022} is an apocalyptic number.

21010112111022 is an abundant number, since it is smaller than the sum of its proper divisors (22460120840658).

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

21010112111022 is a wasteful number, since it uses less digits than its factorization.

21010112111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876368.

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

Adding to 21010112111022 its reverse (22011121101012), we get a palindrome (43021233212034).

The spelling of 21010112111022 in words is "twenty-one trillion, ten billion, one hundred twelve million, one hundred eleven thousand, twenty-two".