212145053355 has 24 divisors (see below), whose sum is σ = 367816157280. Its totient is φ = 113113854720.

The previous prime is 212145053353. The next prime is 212145053359. The reversal of 212145053355 is 553350541212.

212145053355 is a `hidden beast` number, since 2 + 1 + 21 + 4 + 50 + 533 + 55 = 666.

It is not a de Polignac number, because 212145053355 - 2¹ = 212145053353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212145053353) 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, 457495 + ... + 795984.

It is an arithmetic number, because the mean of its divisors is an integer number (15325673220).

Almost surely, 2^212145053355 is an apocalyptic number.

212145053355 is a deficient number, since it is larger than the sum of its proper divisors (155671103925).

212145053355 is a wasteful number, since it uses less digits than its factorization.

212145053355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257251 (or 1257248 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 212145053355 its reverse (553350541212), we get a palindrome (765495594567).

The spelling of 212145053355 in words is "two hundred twelve billion, one hundred forty-five million, fifty-three thousand, three hundred fifty-five".