21001330132011 has 24 divisors (see below), whose sum is σ = 30923572193280. Its totient is φ = 13731420452400.

The previous prime is 21001330132007. The next prime is 21001330132031. The reversal of 21001330132011 is 11023103310012.

21001330132011 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 1 + 330 + 1 + 320 + 11 = 666.

It is not a de Polignac number, because 21001330132011 - 2² = 21001330132007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21001330132031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85914421 + ... + 86158518.

It is an arithmetic number, because the mean of its divisors is an integer number (1288482174720).

Almost surely, 2^{21001330132011} is an apocalyptic number.

21001330132011 is a deficient number, since it is larger than the sum of its proper divisors (9922242061269).

21001330132011 is a wasteful number, since it uses less digits than its factorization.

21001330132011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172073207 (or 172073204 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21001330132011 its reverse (11023103310012), we get a palindrome (32024433442023).

The spelling of 21001330132011 in words is "twenty-one trillion, one billion, three hundred thirty million, one hundred thirty-two thousand, eleven".