21133011001230 has 192 divisors, whose sum is σ = 58923412104960. Its totient is φ = 5236028448768.

The previous prime is 21133011001189. The next prime is 21133011001259. The reversal of 21133011001230 is 3210011033112.

21133011001230 is a `hidden beast` number, since 2 + 1 + 1 + 330 + 1 + 100 + 1 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1343220444 + ... + 1343236176.

It is an arithmetic number, because the mean of its divisors is an integer number (306892771380).

Almost surely, 2^{21133011001230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21133011001230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29461706052480).

21133011001230 is an abundant number, since it is smaller than the sum of its proper divisors (37790401103730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21133011001230 is a wasteful number, since it uses less digits than its factorization.

21133011001230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26955 (or 26952 counting only the distinct ones).

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

Adding to 21133011001230 its reverse (3210011033112), we get a palindrome (24343022034342).

The spelling of 21133011001230 in words is "twenty-one trillion, one hundred thirty-three billion, eleven million, one thousand, two hundred thirty".