145205010221 has 8 divisors (see below), whose sum is σ = 152852952000. Its totient is φ = 137557625760.

The previous prime is 145205010163. The next prime is 145205010227. The reversal of 145205010221 is 122010502541.

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

It is a de Polignac number, because none of the positive numbers 2^k-145205010221 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 (145205010227) 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, 462080 + ... + 709878.

It is an arithmetic number, because the mean of its divisors is an integer number (19106619000).

Almost surely, 2^145205010221 is an apocalyptic number.

It is an amenable number.

145205010221 is a deficient number, since it is larger than the sum of its proper divisors (7647941779).

145205010221 is a wasteful number, since it uses less digits than its factorization.

145205010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278659.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 145205010221 its reverse (122010502541), we get a palindrome (267215512762).

The spelling of 145205010221 in words is "one hundred forty-five billion, two hundred five million, ten thousand, two hundred twenty-one".