21445242324200 has 48 divisors (see below), whose sum is σ = 52793140671180. Its totient is φ = 8073502991360.

The previous prime is 21445242324161. The next prime is 21445242324239. The reversal of 21445242324200 is 242324254412.

It is an interprime number because it is at equal distance from previous prime (21445242324161) and next prime (21445242324239).

It can be written as a sum of positive squares in 6 ways, for example, as 3499496041636 + 17945746282564 = 1870694^2 + 4236242^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3153708707 + ... + 3153715506.

Almost surely, 2^{21445242324200} is an apocalyptic number.

21445242324200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21445242324200 is an abundant number, since it is smaller than the sum of its proper divisors (31347898346980).

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

21445242324200 is a wasteful number, since it uses less digits than its factorization.

21445242324200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307424246 (or 6307424237 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 21445242324200 its reverse (242324254412), we get a palindrome (21687566578612).

The spelling of 21445242324200 in words is "twenty-one trillion, four hundred forty-five billion, two hundred forty-two million, three hundred twenty-four thousand, two hundred".