21000010210012 has 24 divisors (see below), whose sum is σ = 38922130225440. Its totient is φ = 9879730037760.

The previous prime is 21000010210007. The next prime is 21000010210033. The reversal of 21000010210012 is 21001201000012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40800312 + ... + 41311807.

It is an arithmetic number, because the mean of its divisors is an integer number (1621755426060).

Almost surely, 2^{21000010210012} is an apocalyptic number.

It is an amenable number.

21000010210012 is a deficient number, since it is larger than the sum of its proper divisors (17922120015428).

21000010210012 is a wasteful number, since it uses less digits than its factorization.

21000010210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82115901 (or 82115899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21000010210012 its reverse (21001201000012), we get a palindrome (42001211210024).

The spelling of 21000010210012 in words is "twenty-one trillion, ten million, two hundred ten thousand, twelve".