222464021 has 8 divisors (see below), whose sum is σ = 241817184. Its totient is φ = 203430960.

The previous prime is 222464009. The next prime is 222464089. The reversal of 222464021 is 120464222.

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 222464021 - 2²² = 218269717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222466021) 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, 78575 + ... + 81356.

It is an arithmetic number, because the mean of its divisors is an integer number (30227148).

Almost surely, 2^222464021 is an apocalyptic number.

It is an amenable number.

222464021 is a deficient number, since it is larger than the sum of its proper divisors (19353163).

222464021 is a wasteful number, since it uses less digits than its factorization.

222464021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160051.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 222464021 is about 14915.2278225980. The cubic root of 222464021 is about 605.9264734140.

The spelling of 222464021 in words is "two hundred twenty-two million, four hundred sixty-four thousand, twenty-one".