2312121211201 has 4 divisors (see below), whose sum is σ = 2312135408304. Its totient is φ = 2312107014100.

The previous prime is 2312121211199. The next prime is 2312121211219. The reversal of 2312121211201 is 1021121212132.

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 2312121211201 - 2¹ = 2312121211199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312121211271) 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, 6851395 + ... + 7180936.

It is an arithmetic number, because the mean of its divisors is an integer number (578033852076).

Almost surely, 2^{2312121211201} is an apocalyptic number.

It is an amenable number.

2312121211201 is a deficient number, since it is larger than the sum of its proper divisors (14197103).

2312121211201 is a wasteful number, since it uses less digits than its factorization.

2312121211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14197102.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2312121211201 its reverse (1021121212132), we get a palindrome (3333242423333).

The spelling of 2312121211201 in words is "two trillion, three hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, two hundred one".