22121000050 has 24 divisors (see below), whose sum is σ = 41150592756. Its totient is φ = 8847210240.

The previous prime is 22121000047. The next prime is 22121000071. The reversal of 22121000050 is 5000012122.

It can be written as a sum of positive squares in 6 ways, for example, as 18372989209 + 3748010841 = 135547^2 + 61221^2 .

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, 410262 + ... + 461038.

Almost surely, 2^22121000050 is an apocalyptic number.

22121000050 is a deficient number, since it is larger than the sum of its proper divisors (19029592706).

22121000050 is a wasteful number, since it uses less digits than its factorization.

22121000050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59502 (or 59497 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

Adding to 22121000050 its reverse (5000012122), we get a palindrome (27121012172).

The spelling of 22121000050 in words is "twenty-two billion, one hundred twenty-one million, fifty", and thus it is an aban number.