21112201020012 has 12 divisors (see below), whose sum is σ = 49261802380056. Its totient is φ = 7037400340000.

The previous prime is 21112201019993. The next prime is 21112201020047. The reversal of 21112201020012 is 21002010221112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 21112201019973 and 21112201020000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879675042489 + ... + 879675042512.

It is an arithmetic number, because the mean of its divisors is an integer number (4105150198338).

Almost surely, 2^{21112201020012} is an apocalyptic number.

It is an amenable number.

21112201020012 is an abundant number, since it is smaller than the sum of its proper divisors (28149601360044).

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

21112201020012 is a wasteful number, since it uses less digits than its factorization.

21112201020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759350085008 (or 1759350085006 counting only the distinct ones).

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

Adding to 21112201020012 its reverse (21002010221112), we get a palindrome (42114211241124).

The spelling of 21112201020012 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, twenty thousand, twelve".