221214074 has 8 divisors (see below), whose sum is σ = 349285440. Its totient is φ = 104785596.

The previous prime is 221214073. The next prime is 221214089. The reversal of 221214074 is 470412122.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221214073) 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, 2910674 + ... + 2910749.

It is an arithmetic number, because the mean of its divisors is an integer number (43660680).

Almost surely, 2^221214074 is an apocalyptic number.

221214074 is a deficient number, since it is larger than the sum of its proper divisors (128071366).

221214074 is a wasteful number, since it uses less digits than its factorization.

221214074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821444.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 221214074 is about 14873.2670923372. The cubic root of 221214074 is about 604.7895121877.

Adding to 221214074 its reverse (470412122), we get a palindrome (691626196).

The spelling of 221214074 in words is "two hundred twenty-one million, two hundred fourteen thousand, seventy-four".