2312121123211 has 8 divisors (see below), whose sum is σ = 2412731993760. Its totient is φ = 2211517241472.

The previous prime is 2312121123173. The next prime is 2312121123217. The reversal of 2312121123211 is 1123211212132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2312121123211 - 2¹⁵ = 2312121090443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312121123217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065480 + ... + 2399893.

It is an arithmetic number, because the mean of its divisors is an integer number (301591499220).

Almost surely, 2^{2312121123211} is an apocalyptic number.

2312121123211 is a deficient number, since it is larger than the sum of its proper divisors (100610870549).

2312121123211 is a wasteful number, since it uses less digits than its factorization.

2312121123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494405.

The product of its digits is 288, while the sum is 22.

Adding to 2312121123211 its reverse (1123211212132), we get a palindrome (3435332335343).

The spelling of 2312121123211 in words is "two trillion, three hundred twelve billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred eleven".