145221233101 has 4 divisors (see below), whose sum is σ = 165967123552. Its totient is φ = 124475342652.

The previous prime is 145221233077. The next prime is 145221233123. The reversal of 145221233101 is 101332122541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145221233101 - 2¹³ = 145221224909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145221237101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10372945215 + ... + 10372945228.

It is an arithmetic number, because the mean of its divisors is an integer number (41491780888).

Almost surely, 2^145221233101 is an apocalyptic number.

It is an amenable number.

145221233101 is a deficient number, since it is larger than the sum of its proper divisors (20745890451).

145221233101 is an equidigital number, since it uses as much as digits as its factorization.

145221233101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20745890450.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 145221233101 its reverse (101332122541), we get a palindrome (246553355642).

The spelling of 145221233101 in words is "one hundred forty-five billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred one".