21002201020012 has 12 divisors (see below), whose sum is σ = 36862913662120. Its totient is φ = 10469939973696.

The previous prime is 21002201020001. The next prime is 21002201020037. The reversal of 21002201020012 is 21002010220012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21002201019974 and 21002201020001.

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, 7790132562 + ... + 7790135257.

Almost surely, 2^{21002201020012} is an apocalyptic number.

It is an amenable number.

21002201020012 is a deficient number, since it is larger than the sum of its proper divisors (15860712642108).

21002201020012 is a wasteful number, since it uses less digits than its factorization.

21002201020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15580268160 (or 15580268158 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21002201020012 its reverse (21002010220012), we get a palindrome (42004211240024).

The spelling of 21002201020012 in words is "twenty-one trillion, two billion, two hundred one million, twenty thousand, twelve".