211221000300 has 72 divisors (see below), whose sum is σ = 611226410256. Its totient is φ = 56316968960.

The previous prime is 211221000293. The next prime is 211221000311. The reversal of 211221000300 is 3000122112.

It is a super-2 number, since 2×211221000300² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2042644 + ... + 2143556.

It is an arithmetic number, because the mean of its divisors is an integer number (8489255698).

Almost surely, 2^211221000300 is an apocalyptic number.

211221000300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211221000300 is an abundant number, since it is smaller than the sum of its proper divisors (400005409956).

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

211221000300 is a wasteful number, since it uses less digits than its factorization.

211221000300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107907 (or 107900 counting only the distinct ones).

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

Adding to 211221000300 its reverse (3000122112), we get a palindrome (214221122412).

The spelling of 211221000300 in words is "two hundred eleven billion, two hundred twenty-one million, three hundred", and thus it is an aban number.