221116522 has 8 divisors (see below), whose sum is σ = 361827072. Its totient is φ = 100507500.

The previous prime is 221116513. The next prime is 221116531. The reversal of 221116522 is 225611122.

It is an interprime number because it is at equal distance from previous prime (221116513) and next prime (221116531).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10050751 = 221116522 / (2 + 2 + 1 + 1 + 1 + 6 + 5 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 221116493 and 221116502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5025354 + ... + 5025397.

It is an arithmetic number, because the mean of its divisors is an integer number (45228384).

Almost surely, 2^221116522 is an apocalyptic number.

221116522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221116522 is a deficient number, since it is larger than the sum of its proper divisors (140710550).

221116522 is a wasteful number, since it uses less digits than its factorization.

221116522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050764.

The product of its digits is 480, while the sum is 22.

The square root of 221116522 is about 14869.9872898399. The cubic root of 221116522 is about 604.7005981628.

Adding to 221116522 its reverse (225611122), we get a palindrome (446727644).

The spelling of 221116522 in words is "two hundred twenty-one million, one hundred sixteen thousand, five hundred twenty-two".