2121260111567 has 8 divisors (see below), whose sum is σ = 2157266417280. Its totient is φ = 2085255564120.

The previous prime is 2121260111557. The next prime is 2121260111587. The reversal of 2121260111567 is 7651110621212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121260111567 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 (2121260111527) 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, 2119142 + ... + 2955212.

It is an arithmetic number, because the mean of its divisors is an integer number (269658302160).

Almost surely, 2^{2121260111567} is an apocalyptic number.

2121260111567 is a deficient number, since it is larger than the sum of its proper divisors (36006305713).

2121260111567 is an equidigital number, since it uses as much as digits as its factorization.

2121260111567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879133.

The product of its (nonzero) digits is 10080, while the sum is 35.

Adding to 2121260111567 its reverse (7651110621212), we get a palindrome (9772370732779).

The spelling of 2121260111567 in words is "two trillion, one hundred twenty-one billion, two hundred sixty million, one hundred eleven thousand, five hundred sixty-seven".