145421201233 has 12 divisors (see below), whose sum is σ = 184541933232. Its totient is φ = 113315221320.

The previous prime is 145421201213. The next prime is 145421201293. The reversal of 145421201233 is 332102124541.

It is not a de Polignac number, because 145421201233 - 2⁹ = 145421200721 is a prime.

It is a super-2 number, since 2×145421201233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145421201213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134898535 + ... + 134899612.

It is an arithmetic number, because the mean of its divisors is an integer number (15378494436).

Almost surely, 2^145421201233 is an apocalyptic number.

It is an amenable number.

145421201233 is a deficient number, since it is larger than the sum of its proper divisors (39120731999).

145421201233 is a wasteful number, since it uses less digits than its factorization.

145421201233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269798172 (or 269798165 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 145421201233 its reverse (332102124541), we get a palindrome (477523325774).

The spelling of 145421201233 in words is "one hundred forty-five billion, four hundred twenty-one million, two hundred one thousand, two hundred thirty-three".