2512123121111 has 4 divisors (see below), whose sum is σ = 2528759698224. Its totient is φ = 2495486544000.

The previous prime is 2512123121063. The next prime is 2512123121141. The reversal of 2512123121111 is 1111213212152.

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 2512123121111 - 2¹⁴ = 2512123104727 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 (2512123121141) 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, 8318288330 + ... + 8318288631.

It is an arithmetic number, because the mean of its divisors is an integer number (632189924556).

Almost surely, 2^{2512123121111} is an apocalyptic number.

2512123121111 is a deficient number, since it is larger than the sum of its proper divisors (16636577113).

2512123121111 is a wasteful number, since it uses less digits than its factorization.

2512123121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16636577112.

The product of its digits is 240, while the sum is 23.

Adding to 2512123121111 its reverse (1111213212152), we get a palindrome (3623336333263).

The spelling of 2512123121111 in words is "two trillion, five hundred twelve billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred eleven".