212102323455 has 32 divisors (see below), whose sum is σ = 370252850688. Its totient is φ = 102826966400.

The previous prime is 212102323453. The next prime is 212102323457. The reversal of 212102323455 is 554323201212.

It is an interprime number because it is at equal distance from previous prime (212102323453) and next prime (212102323457).

It is not a de Polignac number, because 212102323455 - 2¹ = 212102323453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102323453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1693657 + ... + 1814573.

It is an arithmetic number, because the mean of its divisors is an integer number (11570401584).

Almost surely, 2^212102323455 is an apocalyptic number.

212102323455 is a deficient number, since it is larger than the sum of its proper divisors (158150527233).

212102323455 is a wasteful number, since it uses less digits than its factorization.

212102323455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131567.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 212102323455 its reverse (554323201212), we get a palindrome (766425524667).

The spelling of 212102323455 in words is "two hundred twelve billion, one hundred two million, three hundred twenty-three thousand, four hundred fifty-five".