21012230300 has 18 divisors (see below), whose sum is σ = 45596539968. Its totient is φ = 8404892080.

The previous prime is 21012230297. The next prime is 21012230341. The reversal of 21012230300 is 303221012.

It is a happy number.

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, 105061052 + ... + 105061251.

Almost surely, 2^21012230300 is an apocalyptic number.

21012230300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012230300 is an abundant number, since it is smaller than the sum of its proper divisors (24584309668).

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

21012230300 is a wasteful number, since it uses less digits than its factorization.

21012230300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210122317 (or 210122310 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21012230300 its reverse (303221012), we get a palindrome (21315451312).

The spelling of 21012230300 in words is "twenty-one billion, twelve million, two hundred thirty thousand, three hundred".