50221212 has 12 divisors (see below), whose sum is σ = 117182856. Its totient is φ = 16740400.

The previous prime is 50221207. The next prime is 50221217. The reversal of 50221212 is 21212205.

It is an interprime number because it is at equal distance from previous prime (50221207) and next prime (50221217).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 50221191 and 50221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50221217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092539 + ... + 2092562.

It is an arithmetic number, because the mean of its divisors is an integer number (9765238).

Almost surely, 2^50221212 is an apocalyptic number.

It is an amenable number.

50221212 is an abundant number, since it is smaller than the sum of its proper divisors (66961644).

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

50221212 is a wasteful number, since it uses less digits than its factorization.

50221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185108 (or 4185106 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 50221212 is about 7086.6925995135. The cubic root of 50221212 is about 368.9456519131.

Adding to 50221212 its reverse (21212205), we get a palindrome (71433417).

The spelling of 50221212 in words is "fifty million, two hundred twenty-one thousand, two hundred twelve".