21000012132133 has 8 divisors (see below), whose sum is σ = 21018002904000. Its totient is φ = 20982022702368.

The previous prime is 21000012132119. The next prime is 21000012132191. The reversal of 21000012132133 is 33123121000012.

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 21000012132133 - 2²¹ = 21000010034981 is a prime.

It is a super-2 number, since 2×21000012132133² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21000012132133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000012132103) 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, 32331313 + ... + 32974441.

It is an arithmetic number, because the mean of its divisors is an integer number (2627250363000).

Almost surely, 2^{21000012132133} is an apocalyptic number.

It is an amenable number.

21000012132133 is a deficient number, since it is larger than the sum of its proper divisors (17990771867).

21000012132133 is a wasteful number, since it uses less digits than its factorization.

21000012132133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671051.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21000012132133 its reverse (33123121000012), we get a palindrome (54123133132145).

The spelling of 21000012132133 in words is "twenty-one trillion, twelve million, one hundred thirty-two thousand, one hundred thirty-three".