21000010132312 has 16 divisors (see below), whose sum is σ = 39375393701400. Its totient is φ = 10499905145280.

The previous prime is 21000010132301. The next prime is 21000010132349. The reversal of 21000010132312 is 21323101000012.

It is a congruent number.

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, 11593114 + ... + 13281577.

Almost surely, 2^{21000010132312} is an apocalyptic number.

It is an amenable number.

21000010132312 is a deficient number, since it is larger than the sum of its proper divisors (18375383569088).

21000010132312 is a wasteful number, since it uses less digits than its factorization.

21000010132312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24980226 (or 24980222 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21000010132312 its reverse (21323101000012), we get a palindrome (42323111132324).

The spelling of 21000010132312 in words is "twenty-one trillion, ten million, one hundred thirty-two thousand, three hundred twelve".