222153421 has 4 divisors (see below), whose sum is σ = 253889632. Its totient is φ = 190417212.

The previous prime is 222153413. The next prime is 222153431. The reversal of 222153421 is 124351222.

It is a happy number.

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 222153421 - 2³ = 222153413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222153392 and 222153401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222153431) 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 3 ways as a sum of consecutive naturals, for example, 15868095 + ... + 15868108.

It is an arithmetic number, because the mean of its divisors is an integer number (63472408).

Almost surely, 2^222153421 is an apocalyptic number.

It is an amenable number.

222153421 is a deficient number, since it is larger than the sum of its proper divisors (31736211).

222153421 is an equidigital number, since it uses as much as digits as its factorization.

222153421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31736210.

The product of its digits is 960, while the sum is 22.

The square root of 222153421 is about 14904.8120082073. The cubic root of 222153421 is about 605.6443477663.

The spelling of 222153421 in words is "two hundred twenty-two million, one hundred fifty-three thousand, four hundred twenty-one".