144722222 has 4 divisors (see below), whose sum is σ = 217083336. Its totient is φ = 72361110.

The previous prime is 144722197. The next prime is 144722231. The reversal of 144722222 is 222227441.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 144722191 and 144722200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36180554 + ... + 36180557.

It is an arithmetic number, because the mean of its divisors is an integer number (54270834).

Almost surely, 2^144722222 is an apocalyptic number.

144722222 is a deficient number, since it is larger than the sum of its proper divisors (72361114).

144722222 is an equidigital number, since it uses as much as digits as its factorization.

144722222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72361113.

The product of its digits is 3584, while the sum is 26.

The square root of 144722222 is about 12030.0549458429. The cubic root of 144722222 is about 525.0230943733.

Adding to 144722222 its reverse (222227441), we get a palindrome (366949663).

The spelling of 144722222 in words is "one hundred forty-four million, seven hundred twenty-two thousand, two hundred twenty-two".