26112021121 has 2 divisors, whose sum is σ = 26112021122. Its totient is φ = 26112021120.

The previous prime is 26112021107. The next prime is 26112021191. The reversal of 26112021121 is 12112021162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23674130496 + 2437890625 = 153864^2 + 49375^2 .

It is a cyclic number.

It is not a de Polignac number, because 26112021121 - 2²⁷ = 25977803393 is a prime.

It is not a weakly prime, because it can be changed into another prime (26112021191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13056010560 + 13056010561.

It is an arithmetic number, because the mean of its divisors is an integer number (13056010561).

Almost surely, 2^26112021121 is an apocalyptic number.

It is an amenable number.

26112021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

26112021121 is an equidigital number, since it uses as much as digits as its factorization.

26112021121 is an evil number, because the sum of its binary digits is even.

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

Adding to 26112021121 its reverse (12112021162), we get a palindrome (38224042283).

The spelling of 26112021121 in words is "twenty-six billion, one hundred twelve million, twenty-one thousand, one hundred twenty-one".