21220123030300 has 18 divisors (see below), whose sum is σ = 46047666975968. Its totient is φ = 8488049212080.

The previous prime is 21220123030283. The next prime is 21220123030313. The reversal of 21220123030300 is 303032102212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106100615052 + ... + 106100615251.

Almost surely, 2^{21220123030300} is an apocalyptic number.

21220123030300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220123030300 is an abundant number, since it is smaller than the sum of its proper divisors (24827543945668).

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

21220123030300 is a wasteful number, since it uses less digits than its factorization.

21220123030300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212201230317 (or 212201230310 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21220123030300 its reverse (303032102212), we get a palindrome (21523155132512).

The spelling of 21220123030300 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-three million, thirty thousand, three hundred".