221376353 has 8 divisors (see below), whose sum is σ = 254212320. Its totient is φ = 190658880.

The previous prime is 221376317. The next prime is 221376371. The reversal of 221376353 is 353673122.

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

It is a cyclic number.

It is not a de Polignac number, because 221376353 - 2⁶ = 221376289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221376313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529400 + ... + 529817.

It is an arithmetic number, because the mean of its divisors is an integer number (31776540).

Almost surely, 2^221376353 is an apocalyptic number.

It is an amenable number.

221376353 is a deficient number, since it is larger than the sum of its proper divisors (32835967).

221376353 is a wasteful number, since it uses less digits than its factorization.

221376353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059247.

The product of its digits is 22680, while the sum is 32.

The square root of 221376353 is about 14878.7214840523. The cubic root of 221376353 is about 604.9373639137.

The spelling of 221376353 in words is "two hundred twenty-one million, three hundred seventy-six thousand, three hundred fifty-three".