21301030220100 has 216 divisors, whose sum is σ = 66452064920640. Its totient is φ = 5258036678400.

The previous prime is 21301030220003. The next prime is 21301030220147. The reversal of 21301030220100 is 102203010312.

It is a super-2 number, since 2×21301030220100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21301030220100.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5024706 + ... + 8237094.

Almost surely, 2^{21301030220100} is an apocalyptic number.

21301030220100 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 21301030220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33226032460320).

21301030220100 is an abundant number, since it is smaller than the sum of its proper divisors (45151034700540).

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

21301030220100 is a wasteful number, since it uses less digits than its factorization.

21301030220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212491 (or 3212453 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21301030220100 its reverse (102203010312), we get a palindrome (21403233230412).

The spelling of 21301030220100 in words is "twenty-one trillion, three hundred one billion, thirty million, two hundred twenty thousand, one hundred".