110121421 has 2 divisors, whose sum is σ = 110121422. Its totient is φ = 110121420.

The previous prime is 110121379. The next prime is 110121433. The reversal of 110121421 is 124121011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109432521 + 688900 = 10461^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 110121421 - 2⁷ = 110121293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110121521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55060710 + 55060711.

It is an arithmetic number, because the mean of its divisors is an integer number (55060711).

Almost surely, 2^110121421 is an apocalyptic number.

It is an amenable number.

110121421 is a deficient number, since it is larger than the sum of its proper divisors (1).

110121421 is an equidigital number, since it uses as much as digits as its factorization.

110121421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 110121421 is about 10493.8754042537. The cubic root of 110121421 is about 479.3182175428.

Adding to 110121421 its reverse (124121011), we get a palindrome (234242432).

It can be divided in two parts, 1101 and 21421, that added together give a palindrome (22522).

The spelling of 110121421 in words is "one hundred ten million, one hundred twenty-one thousand, four hundred twenty-one".