21111201300 has 72 divisors (see below), whose sum is σ = 69807712576. Its totient is φ = 4825416960.

The previous prime is 21111201299. The next prime is 21111201487. The reversal of 21111201300 is 310211112.

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 23 ways as a sum of consecutive naturals, for example, 5024377 + ... + 5028576.

Almost surely, 2^21111201300 is an apocalyptic number.

21111201300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21111201300 is an abundant number, since it is smaller than the sum of its proper divisors (48696511276).

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

21111201300 is a wasteful number, since it uses less digits than its factorization.

21111201300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052977 (or 10052970 counting only the distinct ones).

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

Adding to 21111201300 its reverse (310211112), we get a palindrome (21421412412).

The spelling of 21111201300 in words is "twenty-one billion, one hundred eleven million, two hundred one thousand, three hundred".