21133010001 has 16 divisors (see below), whose sum is σ = 28292834304. Its totient is φ = 14030986704.

The previous prime is 21133009981. The next prime is 21133010011. The reversal of 21133010001 is 10001033112.

It is not a de Polignac number, because 21133010001 - 2¹¹ = 21133007953 is a prime.

It is a super-2 number, since 2×21133010001² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21133010011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765900 + ... + 1777826.

It is an arithmetic number, because the mean of its divisors is an integer number (1768302144).

Almost surely, 2^21133010001 is an apocalyptic number.

It is an amenable number.

21133010001 is a deficient number, since it is larger than the sum of its proper divisors (7159824303).

21133010001 is a wasteful number, since it uses less digits than its factorization.

21133010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14300.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21133010001 its reverse (10001033112), we get a palindrome (31134043113).

The spelling of 21133010001 in words is "twenty-one billion, one hundred thirty-three million, ten thousand, one".