21103233211000 has 128 divisors (see below), whose sum is σ = 49683308126400. Its totient is φ = 8389745548800.

The previous prime is 21103233210967. The next prime is 21103233211001. The reversal of 21103233211000 is 11233230112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103233211001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574860646 + ... + 574897354.

Almost surely, 2^{21103233211000} is an apocalyptic number.

21103233211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21103233211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24841654063200).

21103233211000 is an abundant number, since it is smaller than the sum of its proper divisors (28580074915400).

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

21103233211000 is a wasteful number, since it uses less digits than its factorization.

21103233211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40226 (or 40212 counting only the distinct ones).

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

Adding to 21103233211000 its reverse (11233230112), we get a palindrome (21114466441112).

The spelling of 21103233211000 in words is "twenty-one trillion, one hundred three billion, two hundred thirty-three million, two hundred eleven thousand".