212205454503 has 16 divisors (see below), whose sum is σ = 323841190656. Its totient is φ = 121080072960.

The previous prime is 212205454501. The next prime is 212205454561. The reversal of 212205454503 is 305454502212.

It is a happy number.

It is not a de Polignac number, because 212205454503 - 2¹ = 212205454501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212205454501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7493313 + ... + 7521578.

It is an arithmetic number, because the mean of its divisors is an integer number (20240074416).

Almost surely, 2^212205454503 is an apocalyptic number.

212205454503 is a deficient number, since it is larger than the sum of its proper divisors (111635736153).

212205454503 is a wasteful number, since it uses less digits than its factorization.

212205454503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15015574.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 212205454503 its reverse (305454502212), we get a palindrome (517659956715).

The spelling of 212205454503 in words is "two hundred twelve billion, two hundred five million, four hundred fifty-four thousand, five hundred three".