145221305133 has 8 divisors (see below), whose sum is σ = 193796637696. Its totient is φ = 96730088000.

The previous prime is 145221305107. The next prime is 145221305167. The reversal of 145221305133 is 331503122541.

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

It is a cyclic number.

It is not a de Polignac number, because 145221305133 - 2²¹ = 145219207981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145221305133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145221305183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21024828 + ... + 21031733.

It is an arithmetic number, because the mean of its divisors is an integer number (24224579712).

Almost surely, 2^145221305133 is an apocalyptic number.

It is an amenable number.

145221305133 is a deficient number, since it is larger than the sum of its proper divisors (48575332563).

145221305133 is a wasteful number, since it uses less digits than its factorization.

145221305133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42057715.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 145221305133 its reverse (331503122541), we get a palindrome (476724427674).

The spelling of 145221305133 in words is "one hundred forty-five billion, two hundred twenty-one million, three hundred five thousand, one hundred thirty-three".