221262085 has 16 divisors (see below), whose sum is σ = 289941120. Its totient is φ = 160757440.

The previous prime is 221262071. The next prime is 221262091. The reversal of 221262085 is 580262122.

It is not a de Polignac number, because 221262085 - 2⁵ = 221262053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107496 + ... + 109534.

It is an arithmetic number, because the mean of its divisors is an integer number (18121320).

Almost surely, 2^221262085 is an apocalyptic number.

It is an amenable number.

221262085 is a deficient number, since it is larger than the sum of its proper divisors (68679035).

221262085 is a wasteful number, since it uses less digits than its factorization.

221262085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 221262085 is about 14874.8810079274. The cubic root of 221262085 is about 604.8332623409.

The spelling of 221262085 in words is "two hundred twenty-one million, two hundred sixty-two thousand, eighty-five".