21103223301300 has 144 divisors (see below), whose sum is σ = 69826269082752. Its totient is φ = 4820487168000.

The previous prime is 21103223301253. The next prime is 21103223301311. The reversal of 21103223301300 is 310332230112.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 25900 + ... + 6496700.

It is an arithmetic number, because the mean of its divisors is an integer number (484904646408).

Almost surely, 2^{21103223301300} is an apocalyptic number.

21103223301300 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 21103223301300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34913134541376).

21103223301300 is an abundant number, since it is smaller than the sum of its proper divisors (48723045781452).

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

21103223301300 is a wasteful number, since it uses less digits than its factorization.

21103223301300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472378 (or 6472371 counting only the distinct ones).

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

Adding to 21103223301300 its reverse (310332230112), we get a palindrome (21413555531412).

The spelling of 21103223301300 in words is "twenty-one trillion, one hundred three billion, two hundred twenty-three million, three hundred one thousand, three hundred".