2311123001212 has 24 divisors (see below), whose sum is σ = 4285697381280. Its totient is φ = 1086743508480.

The previous prime is 2311123001203. The next prime is 2311123001221. The reversal of 2311123001212 is 2121003211132.

It is an interprime number because it is at equal distance from previous prime (2311123001203) and next prime (2311123001221).

It is a self number, because there is not a number n which added to its sum of digits gives 2311123001212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13095864 + ... + 13271167.

It is an arithmetic number, because the mean of its divisors is an integer number (178570724220).

Almost surely, 2^{2311123001212} is an apocalyptic number.

It is an amenable number.

2311123001212 is a deficient number, since it is larger than the sum of its proper divisors (1974574380068).

2311123001212 is a wasteful number, since it uses less digits than its factorization.

2311123001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26368341 (or 26368339 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2311123001212 its reverse (2121003211132), we get a palindrome (4432126212344).

The spelling of 2311123001212 in words is "two trillion, three hundred eleven billion, one hundred twenty-three million, one thousand, two hundred twelve".