21000101110012 has 96 divisors (see below), whose sum is σ = 38568436236288. Its totient is φ = 9992619000000.

The previous prime is 21000101109991. The next prime is 21000101110031. The reversal of 21000101110012 is 21001110100012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7689526687 + ... + 7689529417.

It is an arithmetic number, because the mean of its divisors is an integer number (401754544128).

Almost surely, 2^{21000101110012} is an apocalyptic number.

It is an amenable number.

21000101110012 is a deficient number, since it is larger than the sum of its proper divisors (17568335126276).

21000101110012 is a wasteful number, since it uses less digits than its factorization.

21000101110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751 (or 4749 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21000101110012 its reverse (21001110100012), we get a palindrome (42001211210024).

The spelling of 21000101110012 in words is "twenty-one trillion, one hundred one million, one hundred ten thousand, twelve".