212154445512232 has 8 divisors (see below), whose sum is σ = 397789585335450. Its totient is φ = 106077222756112.

The previous prime is 212154445512193. The next prime is 212154445512287. The reversal of 212154445512232 is 232215544451212.

It can be written as a sum of positive squares in only one way, i.e., 208111957279396 + 4042488232836 = 14426086^2 + 2010594^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13259652844507 + ... + 13259652844522.

Almost surely, 2^{212154445512232} is an apocalyptic number.

It is an amenable number.

212154445512232 is a deficient number, since it is larger than the sum of its proper divisors (185635139823218).

212154445512232 is a wasteful number, since it uses less digits than its factorization.

212154445512232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26519305689035 (or 26519305689031 counting only the distinct ones).

The product of its digits is 768000, while the sum is 43.

Adding to 212154445512232 its reverse (232215544451212), we get a palindrome (444369989963444).

The spelling of 212154445512232 in words is "two hundred twelve trillion, one hundred fifty-four billion, four hundred forty-five million, five hundred twelve thousand, two hundred thirty-two".