21011233210330 has 64 divisors (see below), whose sum is σ = 43080766396416. Its totient is φ = 7303417000000.

The previous prime is 21011233210321. The next prime is 21011233210349. The reversal of 21011233210330 is 3301233211012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1074705 + ... + 6570955.

It is an arithmetic number, because the mean of its divisors is an integer number (673136974944).

Almost surely, 2^{21011233210330} is an apocalyptic number.

21011233210330 is an abundant number, since it is smaller than the sum of its proper divisors (22069533186086).

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

21011233210330 is a wasteful number, since it uses less digits than its factorization.

21011233210330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497803.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21011233210330 its reverse (3301233211012), we get a palindrome (24312466421342).

The spelling of 21011233210330 in words is "twenty-one trillion, eleven billion, two hundred thirty-three million, two hundred ten thousand, three hundred thirty".