21414212250 has 64 divisors (see below), whose sum is σ = 54355916160. Its totient is φ = 5613657600.

The previous prime is 21414212221. The next prime is 21414212279. The reversal of 21414212250 is 5221241412.

It is an interprime number because it is at equal distance from previous prime (21414212221) and next prime (21414212279).

It is a self number, because there is not a number n which added to its sum of digits gives 21414212250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197719 + ... + 286218.

It is an arithmetic number, because the mean of its divisors is an integer number (849311190).

Almost surely, 2^21414212250 is an apocalyptic number.

21414212250 is an abundant number, since it is smaller than the sum of its proper divisors (32941703910).

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

21414212250 is a wasteful number, since it uses less digits than its factorization.

21414212250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484016 (or 484006 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 21414212250 its reverse (5221241412), we get a palindrome (26635453662).

The spelling of 21414212250 in words is "twenty-one billion, four hundred fourteen million, two hundred twelve thousand, two hundred fifty".