501222216 has 32 divisors (see below), whose sum is σ = 1366970400. Its totient is φ = 151885440.

The previous prime is 501222193. The next prime is 501222259. The reversal of 501222216 is 612222105.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 501222192 and 501222201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949021 + ... + 949548.

It is an arithmetic number, because the mean of its divisors is an integer number (42717825).

Almost surely, 2^501222216 is an apocalyptic number.

It is an amenable number.

501222216 is an abundant number, since it is smaller than the sum of its proper divisors (865748184).

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

501222216 is a wasteful number, since it uses less digits than its factorization.

501222216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898589 (or 1898585 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 501222216 is about 22387.9926746459. The cubic root of 501222216 is about 794.3467154024.

It can be divided in two parts, 50 and 1222216, that added together give a triangular number (1222266 = T₁₅₆₃).

The spelling of 501222216 in words is "five hundred one million, two hundred twenty-two thousand, two hundred sixteen".