221446534 has 8 divisors (see below), whose sum is σ = 332335080. Its totient is φ = 110668176.

The previous prime is 221446513. The next prime is 221446541. The reversal of 221446534 is 435644122.

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

It is a super-2 number, since 2×221446534² = 98077134841226312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221446496 and 221446505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22324 + ... + 30679.

It is an arithmetic number, because the mean of its divisors is an integer number (41541885).

Almost surely, 2^221446534 is an apocalyptic number.

221446534 is a deficient number, since it is larger than the sum of its proper divisors (110888546).

221446534 is a wasteful number, since it uses less digits than its factorization.

221446534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55094.

The product of its digits is 23040, while the sum is 31.

The square root of 221446534 is about 14881.0797323313. The cubic root of 221446534 is about 605.0012831519.

The spelling of 221446534 in words is "two hundred twenty-one million, four hundred forty-six thousand, five hundred thirty-four".