145106222 has 4 divisors (see below), whose sum is σ = 217659336. Its totient is φ = 72553110.

The previous prime is 145106219. The next prime is 145106243. The reversal of 145106222 is 222601541.

It is a happy number.

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

It is a super-2 number, since 2×145106222² = 42111631326226568, which contains 22 as substring.

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, 36276554 + ... + 36276557.

It is an arithmetic number, because the mean of its divisors is an integer number (54414834).

Almost surely, 2^145106222 is an apocalyptic number.

145106222 is a deficient number, since it is larger than the sum of its proper divisors (72553114).

145106222 is an equidigital number, since it uses as much as digits as its factorization.

145106222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72553113.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 145106222 is about 12046.0043998000. The cubic root of 145106222 is about 525.4870425132.

Adding to 145106222 its reverse (222601541), we get a palindrome (367707763).

The spelling of 145106222 in words is "one hundred forty-five million, one hundred six thousand, two hundred twenty-two".