145221233123 has 2 divisors, whose sum is σ = 145221233124. Its totient is φ = 145221233122.

The previous prime is 145221233077. The next prime is 145221233237. The reversal of 145221233123 is 321332122541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145221233123 - 2¹⁶ = 145221167587 is a prime.

It is not a weakly prime, because it can be changed into another prime (145221233023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72610616561 + 72610616562.

It is an arithmetic number, because the mean of its divisors is an integer number (72610616562).

Almost surely, 2^145221233123 is an apocalyptic number.

145221233123 is a deficient number, since it is larger than the sum of its proper divisors (1).

145221233123 is an equidigital number, since it uses as much as digits as its factorization.

145221233123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

Adding to 145221233123 its reverse (321332122541), we get a palindrome (466553355664).

The spelling of 145221233123 in words is "one hundred forty-five billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred twenty-three".