222621051 has 8 divisors (see below), whose sum is σ = 297208384. Its totient is φ = 148223880.

The previous prime is 222621029. The next prime is 222621053. The reversal of 222621051 is 150126222.

It is a happy number.

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

It is not a de Polignac number, because 222621051 - 2²⁶ = 155512187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222621053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44785 + ... + 49506.

It is an arithmetic number, because the mean of its divisors is an integer number (37151048).

Almost surely, 2^222621051 is an apocalyptic number.

222621051 is a deficient number, since it is larger than the sum of its proper divisors (74587333).

222621051 is an equidigital number, since it uses as much as digits as its factorization.

222621051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95081.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 222621051 is about 14920.4909771763. The cubic root of 222621051 is about 606.0690077064.

Adding to 222621051 its reverse (150126222), we get a palindrome (372747273).

The spelling of 222621051 in words is "two hundred twenty-two million, six hundred twenty-one thousand, fifty-one".