146455040020221 has 24 divisors (see below), whose sum is σ = 213502714613760. Its totient is φ = 96733804468896.

The previous prime is 146455040020213. The next prime is 146455040020231. The reversal of 146455040020221 is 122020040554641.

146455040020221 is a `hidden beast` number, since 1 + 4 + 6 + 4 + 5 + 5 + 0 + 400 + 20 + 221 = 666.

It is not a de Polignac number, because 146455040020221 - 2³ = 146455040020213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146455040020231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7807216 + ... + 18811238.

It is an arithmetic number, because the mean of its divisors is an integer number (8895946442240).

Almost surely, 2^{146455040020221} is an apocalyptic number.

It is an amenable number.

146455040020221 is a deficient number, since it is larger than the sum of its proper divisors (67047674593539).

146455040020221 is a wasteful number, since it uses less digits than its factorization.

146455040020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11017705 (or 11017702 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 146455040020221 its reverse (122020040554641), we get a palindrome (268475080574862).

The spelling of 146455040020221 in words is "one hundred forty-six trillion, four hundred fifty-five billion, forty million, twenty thousand, two hundred twenty-one".