2111001312 has 48 divisors (see below), whose sum is σ = 6333005952. Its totient is φ = 603143040.

The previous prime is 2111001311. The next prime is 2111001313. The reversal of 2111001312 is 2131001112.

It is an interprime number because it is at equal distance from previous prime (2111001311) and next prime (2111001313).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111001311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570014 + ... + 1571357.

It is an arithmetic number, because the mean of its divisors is an integer number (131937624).

Almost surely, 2^2111001312 is an apocalyptic number.

It is an amenable number.

2111001312 is an abundant number, since it is smaller than the sum of its proper divisors (4222004640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111001312 is a wasteful number, since it uses less digits than its factorization.

2111001312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141391 (or 3141383 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2111001312 is about 45945.6343083867. The cubic root of 2111001312 is about 1282.8114699346.

Adding to 2111001312 its reverse (2131001112), we get a palindrome (4242002424).

The spelling of 2111001312 in words is "two billion, one hundred eleven million, one thousand, three hundred twelve".