212016221453 has 4 divisors (see below), whose sum is σ = 212018491968. Its totient is φ = 212013950940.

The previous prime is 212016221449. The next prime is 212016221467. The reversal of 212016221453 is 354122610212.

212016221453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212016221453 - 2² = 212016221449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212016221353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988901 + ... + 1184042.

It is an arithmetic number, because the mean of its divisors is an integer number (53004622992).

Almost surely, 2^212016221453 is an apocalyptic number.

It is an amenable number.

212016221453 is a deficient number, since it is larger than the sum of its proper divisors (2270515).

212016221453 is an equidigital number, since it uses as much as digits as its factorization.

212016221453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270514.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 212016221453 its reverse (354122610212), we get a palindrome (566138831665).

The spelling of 212016221453 in words is "two hundred twelve billion, sixteen million, two hundred twenty-one thousand, four hundred fifty-three".