145120414222231 has 16 divisors (see below), whose sum is σ = 168580572613120. Its totient is φ = 122342660275680.

The previous prime is 145120414222051. The next prime is 145120414222243. The reversal of 145120414222231 is 132222414021541.

It is a cyclic number.

It is not a de Polignac number, because 145120414222231 - 2⁹ = 145120414221719 is a prime.

It is a super-2 number, since 2×145120414222231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145120414222271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2496261 + ... + 17218366.

It is an arithmetic number, because the mean of its divisors is an integer number (10536285788320).

Almost surely, 2^{145120414222231} is an apocalyptic number.

145120414222231 is a deficient number, since it is larger than the sum of its proper divisors (23460158390889).

145120414222231 is a wasteful number, since it uses less digits than its factorization.

145120414222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19731934.

The product of its (nonzero) digits is 30720, while the sum is 34.

Adding to 145120414222231 its reverse (132222414021541), we get a palindrome (277342828243772).

The spelling of 145120414222231 in words is "one hundred forty-five trillion, one hundred twenty billion, four hundred fourteen million, two hundred twenty-two thousand, two hundred thirty-one".