222141421 has 8 divisors (see below), whose sum is σ = 230545080. Its totient is φ = 213787392.

The previous prime is 222141379. The next prime is 222141427. The reversal of 222141421 is 124141222.

It can be written as a sum of positive squares in 4 ways, for example, as 9302500 + 212838921 = 3050^2 + 14589^2 .

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 222141421 - 2¹⁹ = 221617133 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 (222141427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3160 + ... + 21313.

It is an arithmetic number, because the mean of its divisors is an integer number (28818135).

Almost surely, 2^222141421 is an apocalyptic number.

It is an amenable number.

222141421 is a deficient number, since it is larger than the sum of its proper divisors (8403659).

222141421 is a wasteful number, since it uses less digits than its factorization.

222141421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24815.

The product of its digits is 256, while the sum is 19.

The square root of 222141421 is about 14904.4094482136. The cubic root of 222141421 is about 605.6334425954.

Adding to 222141421 its reverse (124141222), we get a palindrome (346282643).

The spelling of 222141421 in words is "two hundred twenty-two million, one hundred forty-one thousand, four hundred twenty-one".