26111200221 has 12 divisors (see below), whose sum is σ = 37878053148. Its totient is φ = 17332755264.

The previous prime is 26111200183. The next prime is 26111200223. The reversal of 26111200221 is 12200211162.

It can be written as a sum of positive squares in 2 ways, for example, as 2205711225 + 23905488996 = 46965^2 + 154614^2 .

It is not a de Polignac number, because 26111200221 - 2¹¹ = 26111198173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26111200194 and 26111200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26111200223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6223750 + ... + 6227943.

It is an arithmetic number, because the mean of its divisors is an integer number (3156504429).

Almost surely, 2^26111200221 is an apocalyptic number.

It is an amenable number.

26111200221 is a deficient number, since it is larger than the sum of its proper divisors (11766852927).

26111200221 is a wasteful number, since it uses less digits than its factorization.

26111200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12451932 (or 12451929 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 26111200221 its reverse (12200211162), we get a palindrome (38311411383).

The spelling of 26111200221 in words is "twenty-six billion, one hundred eleven million, two hundred thousand, two hundred twenty-one".