21244189350 has 48 divisors (see below), whose sum is σ = 53008875072. Its totient is φ = 5630355360.

The previous prime is 21244189321. The next prime is 21244189357. The reversal of 21244189350 is 5398144212.

It is a super-2 number, since 2×21244189350² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21244189299 and 21244189308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244189357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409992 + ... + 458891.

It is an arithmetic number, because the mean of its divisors is an integer number (1104351564).

Almost surely, 2^21244189350 is an apocalyptic number.

21244189350 is an abundant number, since it is smaller than the sum of its proper divisors (31764685722).

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

21244189350 is a wasteful number, since it uses less digits than its factorization.

21244189350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869061 (or 869056 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 21244189350 in words is "twenty-one billion, two hundred forty-four million, one hundred eighty-nine thousand, three hundred fifty".