212102132455 has 4 divisors (see below), whose sum is σ = 254522558952. Its totient is φ = 169681705960.

The previous prime is 212102132449. The next prime is 212102132477. The reversal of 212102132455 is 554231201212.

It is a happy number.

212102132455 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.

It is not a de Polignac number, because 212102132455 - 2¹⁵ = 212102099687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 21210213241 + ... + 21210213250.

It is an arithmetic number, because the mean of its divisors is an integer number (63630639738).

Almost surely, 2^212102132455 is an apocalyptic number.

212102132455 is a deficient number, since it is larger than the sum of its proper divisors (42420426497).

212102132455 is an equidigital number, since it uses as much as digits as its factorization.

212102132455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42420426496.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 212102132455 its reverse (554231201212), we get a palindrome (766333333667).

The spelling of 212102132455 in words is "two hundred twelve billion, one hundred two million, one hundred thirty-two thousand, four hundred fifty-five".