212103101311 has 4 divisors (see below), whose sum is σ = 212111473624. Its totient is φ = 212094729000.

The previous prime is 212103101291. The next prime is 212103101339. The reversal of 212103101311 is 113101301212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212103101311 - 2⁷ = 212103101183 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 (212103101341) 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, 4148040 + ... + 4198861.

It is an arithmetic number, because the mean of its divisors is an integer number (53027868406).

Almost surely, 2^212103101311 is an apocalyptic number.

212103101311 is a deficient number, since it is larger than the sum of its proper divisors (8372313).

212103101311 is an equidigital number, since it uses as much as digits as its factorization.

212103101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372312.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 212103101311 its reverse (113101301212), we get a palindrome (325204402523).

The spelling of 212103101311 in words is "two hundred twelve billion, one hundred three million, one hundred one thousand, three hundred eleven".