2163212123117 has 4 divisors (see below), whose sum is σ = 2163285414816. Its totient is φ = 2163138831420.

The previous prime is 2163212123101. The next prime is 2163212123213. The reversal of 2163212123117 is 7113212123612.

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 2163212123117 - 2⁴ = 2163212123101 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 (2163212120117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36601559 + ... + 36660612.

It is an arithmetic number, because the mean of its divisors is an integer number (540821353704).

Almost surely, 2^{2163212123117} is an apocalyptic number.

It is an amenable number.

2163212123117 is a deficient number, since it is larger than the sum of its proper divisors (73291699).

2163212123117 is an equidigital number, since it uses as much as digits as its factorization.

2163212123117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73291698.

The product of its digits is 6048, while the sum is 32.

Adding to 2163212123117 its reverse (7113212123612), we get a palindrome (9276424246729).

The spelling of 2163212123117 in words is "two trillion, one hundred sixty-three billion, two hundred twelve million, one hundred twenty-three thousand, one hundred seventeen".