212145321354 has 16 divisors (see below), whose sum is σ = 427529504160. Its totient is φ = 70175296880.

The previous prime is 212145321337. The next prime is 212145321359. The reversal of 212145321354 is 453123541212.

It is not an unprimeable number, because it can be changed into a prime (212145321359) 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, 134951709 + ... + 134953280.

It is an arithmetic number, because the mean of its divisors is an integer number (26720594010).

Almost surely, 2^212145321354 is an apocalyptic number.

212145321354 is an abundant number, since it is smaller than the sum of its proper divisors (215384182806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212145321354 is a wasteful number, since it uses less digits than its factorization.

212145321354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269905125.

The product of its digits is 28800, while the sum is 33.

Adding to 212145321354 its reverse (453123541212), we get a palindrome (665268862566).

The spelling of 212145321354 in words is "two hundred twelve billion, one hundred forty-five million, three hundred twenty-one thousand, three hundred fifty-four".