21103323301020 has 192 divisors, whose sum is σ = 61283434222080. Its totient is φ = 5422574976000.

The previous prime is 21103323300989. The next prime is 21103323301051. The reversal of 21103323301020 is 2010332330112.

It is an interprime number because it is at equal distance from previous prime (21103323300989) and next prime (21103323301051).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 197135110 + ... + 197242130.

It is an arithmetic number, because the mean of its divisors is an integer number (319184553240).

Almost surely, 2^{21103323301020} is an apocalyptic number.

21103323301020 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 21103323301020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30641717111040).

21103323301020 is an abundant number, since it is smaller than the sum of its proper divisors (40180110921060).

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

21103323301020 is a wasteful number, since it uses less digits than its factorization.

21103323301020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108196 (or 108194 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21103323301020 its reverse (2010332330112), we get a palindrome (23113655631132).

The spelling of 21103323301020 in words is "twenty-one trillion, one hundred three billion, three hundred twenty-three million, three hundred one thousand, twenty".