145231513222 has 8 divisors (see below), whose sum is σ = 217964334672. Its totient is φ = 72576735000.

The previous prime is 145231513211. The next prime is 145231513291. The reversal of 145231513222 is 222315132541.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19506154 + ... + 19513597.

It is an arithmetic number, because the mean of its divisors is an integer number (27245541834).

Almost surely, 2^145231513222 is an apocalyptic number.

145231513222 is a deficient number, since it is larger than the sum of its proper divisors (72732821450).

145231513222 is a wasteful number, since it uses less digits than its factorization.

145231513222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39021614.

The product of its digits is 14400, while the sum is 31.

Adding to 145231513222 its reverse (222315132541), we get a palindrome (367546645763).

The spelling of 145231513222 in words is "one hundred forty-five billion, two hundred thirty-one million, five hundred thirteen thousand, two hundred twenty-two".