221268254 has 8 divisors (see below), whose sum is σ = 331967160. Its totient is φ = 110612536.

The previous prime is 221268253. The next prime is 221268259. The reversal of 221268254 is 452862122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221268254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221268253) 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, 10112 + ... + 23340.

It is an arithmetic number, because the mean of its divisors is an integer number (41495895).

Almost surely, 2^221268254 is an apocalyptic number.

221268254 is a deficient number, since it is larger than the sum of its proper divisors (110698906).

221268254 is a wasteful number, since it uses less digits than its factorization.

221268254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21594.

The product of its digits is 15360, while the sum is 32.

The square root of 221268254 is about 14875.0883694854. The cubic root of 221268254 is about 604.8388833999.

The spelling of 221268254 in words is "two hundred twenty-one million, two hundred sixty-eight thousand, two hundred fifty-four".