21052015011133 has 8 divisors (see below), whose sum is σ = 21283235064000. Its totient is φ = 20821084529280.

The previous prime is 21052015011127. The next prime is 21052015011149. The reversal of 21052015011133 is 33111051025012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21052015011133 - 2²⁹ = 21051478140221 is a prime.

It is a super-2 number, since 2×21052015011133² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21052015011098 and 21052015011107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21052015011173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72246553 + ... + 72537358.

It is an arithmetic number, because the mean of its divisors is an integer number (2660404383000).

Almost surely, 2^{21052015011133} is an apocalyptic number.

It is an amenable number.

21052015011133 is a deficient number, since it is larger than the sum of its proper divisors (231220052867).

21052015011133 is a wasteful number, since it uses less digits than its factorization.

21052015011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144785507.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 21052015011133 its reverse (33111051025012), we get a palindrome (54163066036145).

The spelling of 21052015011133 in words is "twenty-one trillion, fifty-two billion, fifteen million, eleven thousand, one hundred thirty-three".