21022101300 has 288 divisors, whose sum is σ = 65018060800. Its totient is φ = 5234803200.

The previous prime is 21022101299. The next prime is 21022101389. The reversal of 21022101300 is 310122012.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 95 ways as a sum of consecutive naturals, for example, 68475747 + ... + 68476053.

Almost surely, 2^21022101300 is an apocalyptic number.

21022101300 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 21022101300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32509030400).

21022101300 is an abundant number, since it is smaller than the sum of its proper divisors (43995959500).

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

21022101300 is a wasteful number, since it uses less digits than its factorization.

21022101300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21022101300 its reverse (310122012), we get a palindrome (21332223312).

The spelling of 21022101300 in words is "twenty-one billion, twenty-two million, one hundred one thousand, three hundred".