21133304233030 has 128 divisors (see below), whose sum is σ = 42374860369920. Its totient is φ = 7523594352000.

The previous prime is 21133304233009. The next prime is 21133304233033. The reversal of 21133304233030 is 3033240333112.

It is a self number, because there is not a number n which added to its sum of digits gives 21133304233030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133304233033) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2638031725 + ... + 2638039735.

It is an arithmetic number, because the mean of its divisors is an integer number (331053596640).

Almost surely, 2^{21133304233030} is an apocalyptic number.

21133304233030 is an abundant number, since it is smaller than the sum of its proper divisors (21241556136890).

21133304233030 is a wasteful number, since it uses less digits than its factorization.

21133304233030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21133304233030 its reverse (3033240333112), we get a palindrome (24166544566142).

The spelling of 21133304233030 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred four million, two hundred thirty-three thousand, thirty".