211512311452 has 48 divisors (see below), whose sum is σ = 413477421280. Its totient is φ = 94044561408.

The previous prime is 211512311443. The next prime is 211512311519. The reversal of 211512311452 is 254113215112.

It is a self number, because there is not a number n which added to its sum of digits gives 211512311452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484677 + ... + 811132.

Almost surely, 2^211512311452 is an apocalyptic number.

It is an amenable number.

211512311452 is a deficient number, since it is larger than the sum of its proper divisors (201965109828).

211512311452 is a wasteful number, since it uses less digits than its factorization.

211512311452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295942 (or 1295940 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

Adding to 211512311452 its reverse (254113215112), we get a palindrome (465625526564).

The spelling of 211512311452 in words is "two hundred eleven billion, five hundred twelve million, three hundred eleven thousand, four hundred fifty-two".