21011003210232 has 192 divisors, whose sum is σ = 66406154892480. Its totient is φ = 5877689204736.

The previous prime is 21011003210221. The next prime is 21011003210251. The reversal of 21011003210232 is 23201230011012.

21011003210232 is a `hidden beast` number, since 2 + 1 + 0 + 110 + 0 + 321 + 0 + 232 = 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 47 ways as a sum of consecutive naturals, for example, 2956288 + ... + 7124720.

It is an arithmetic number, because the mean of its divisors is an integer number (345865390065).

Almost surely, 2^{21011003210232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21011003210232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33203077446240).

21011003210232 is an abundant number, since it is smaller than the sum of its proper divisors (45395151682248).

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

21011003210232 is a wasteful number, since it uses less digits than its factorization.

21011003210232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168662 (or 4168655 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21011003210232 its reverse (23201230011012), we get a palindrome (44212233221244).

The spelling of 21011003210232 in words is "twenty-one trillion, eleven billion, three million, two hundred ten thousand, two hundred thirty-two".