110400220261 has 2 divisors, whose sum is σ = 110400220262. Its totient is φ = 110400220260.

The previous prime is 110400220171. The next prime is 110400220267. The reversal of 110400220261 is 162022004011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71746301025 + 38653919236 = 267855^2 + 196606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110400220261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110400220267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55200110130 + 55200110131.

It is an arithmetic number, because the mean of its divisors is an integer number (55200110131).

Almost surely, 2^110400220261 is an apocalyptic number.

It is an amenable number.

110400220261 is a deficient number, since it is larger than the sum of its proper divisors (1).

110400220261 is an equidigital number, since it uses as much as digits as its factorization.

110400220261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 110400220261 its reverse (162022004011), we get a palindrome (272422224272).

The spelling of 110400220261 in words is "one hundred ten billion, four hundred million, two hundred twenty thousand, two hundred sixty-one".