94821221 has 4 divisors (see below), whose sum is σ = 103441344. Its totient is φ = 86201100.

The previous prime is 94821217. The next prime is 94821227. The reversal of 94821221 is 12212849.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 94821221 - 2² = 94821217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94821227) 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, 4310045 + ... + 4310066.

It is an arithmetic number, because the mean of its divisors is an integer number (25860336).

Almost surely, 2^94821221 is an apocalyptic number.

It is an amenable number.

94821221 is a deficient number, since it is larger than the sum of its proper divisors (8620123).

94821221 is a wasteful number, since it uses less digits than its factorization.

94821221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620122.

The product of its digits is 2304, while the sum is 29.

The square root of 94821221 is about 9737.6188567842. The cubic root of 94821221 is about 456.0038553203.

The spelling of 94821221 in words is "ninety-four million, eight hundred twenty-one thousand, two hundred twenty-one".