145022222 has 8 divisors (see below), whose sum is σ = 226991376. Its totient is φ = 69358432.

The previous prime is 145022197. The next prime is 145022233. The reversal of 145022222 is 222220541.

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

145022222 is a modest number, since divided by 22222 gives 1450 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 145022194 and 145022203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576283 + ... + 1576374.

It is an arithmetic number, because the mean of its divisors is an integer number (28373922).

Almost surely, 2^145022222 is an apocalyptic number.

145022222 is a deficient number, since it is larger than the sum of its proper divisors (81969154).

145022222 is a wasteful number, since it uses less digits than its factorization.

145022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152682.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145022222 is about 12042.5172617688. The cubic root of 145022222 is about 525.3856238622.

Adding to 145022222 its reverse (222220541), we get a palindrome (367242763).

The spelling of 145022222 in words is "one hundred forty-five million, twenty-two thousand, two hundred twenty-two".