212211661153 has 4 divisors (see below), whose sum is σ = 212233898800. Its totient is φ = 212189423508.

The previous prime is 212211661139. The next prime is 212211661159. The reversal of 212211661153 is 351166112212.

212211661153 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 212211661153 - 2²⁹ = 211674790241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212211661159) 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, 11104503 + ... + 11123596.

It is an arithmetic number, because the mean of its divisors is an integer number (53058474700).

Almost surely, 2^212211661153 is an apocalyptic number.

It is an amenable number.

212211661153 is a deficient number, since it is larger than the sum of its proper divisors (22237647).

212211661153 is an equidigital number, since it uses as much as digits as its factorization.

212211661153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22237646.

The product of its digits is 4320, while the sum is 31.

Adding to 212211661153 its reverse (351166112212), we get a palindrome (563377773365).

The spelling of 212211661153 in words is "two hundred twelve billion, two hundred eleven million, six hundred sixty-one thousand, one hundred fifty-three".