121441556 has 12 divisors (see below), whose sum is σ = 213950100. Its totient is φ = 60312960.

The previous prime is 121441547. The next prime is 121441571. The reversal of 121441556 is 655144121.

It can be written as a sum of positive squares in 2 ways, for example, as 13987600 + 107453956 = 3740^2 + 10366^2 .

It is a super-2 number, since 2×121441556² = 29496103047402272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101285 + ... + 102476.

It is an arithmetic number, because the mean of its divisors is an integer number (17829175).

Almost surely, 2^121441556 is an apocalyptic number.

It is an amenable number.

121441556 is a deficient number, since it is larger than the sum of its proper divisors (92508544).

121441556 is a wasteful number, since it uses less digits than its factorization.

121441556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203914 (or 203912 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 121441556 is about 11020.0524499659. The cubic root of 121441556 is about 495.2096598500.

Adding to 121441556 its reverse (655144121), we get a palindrome (776585677).

The spelling of 121441556 in words is "one hundred twenty-one million, four hundred forty-one thousand, five hundred fifty-six".