212165141101 has 4 divisors (see below), whose sum is σ = 212173407232. Its totient is φ = 212156874972.

The previous prime is 212165141053. The next prime is 212165141113. The reversal of 212165141101 is 101141561212.

It is a happy number.

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 212165141101 - 2¹³ = 212165132909 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 (212165141171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094445 + ... + 4145938.

It is an arithmetic number, because the mean of its divisors is an integer number (53043351808).

Almost surely, 2^212165141101 is an apocalyptic number.

It is an amenable number.

212165141101 is a deficient number, since it is larger than the sum of its proper divisors (8266131).

212165141101 is an equidigital number, since it uses as much as digits as its factorization.

212165141101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8266130.

The product of its (nonzero) digits is 480, while the sum is 25.

The spelling of 212165141101 in words is "two hundred twelve billion, one hundred sixty-five million, one hundred forty-one thousand, one hundred one".