21002022011112 has 64 divisors (see below), whose sum is σ = 52955420129280. Its totient is φ = 6940702282752.

The previous prime is 21002022011111. The next prime is 21002022011123. The reversal of 21002022011112 is 21111022020012.

It is a junction number, because it is equal to n+sod(n) for n = 21002022011091 and 21002022011100.

It is not an unprimeable number, because it can be changed into a prime (21002022011111) 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, 1963588 + ... + 6771980.

It is an arithmetic number, because the mean of its divisors is an integer number (827428439520).

Almost surely, 2^{21002022011112} is an apocalyptic number.

It is an amenable number.

21002022011112 is an abundant number, since it is smaller than the sum of its proper divisors (31953398118168).

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

21002022011112 is a wasteful number, since it uses less digits than its factorization.

21002022011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809962 (or 4809958 counting only the distinct ones).

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

Adding to 21002022011112 its reverse (21111022020012), we get a palindrome (42113044031124).

The spelling of 21002022011112 in words is "twenty-one trillion, two billion, twenty-two million, eleven thousand, one hundred twelve".