121435550 has 12 divisors (see below), whose sum is σ = 225870216. Its totient is φ = 48574200.

The previous prime is 121435547. The next prime is 121435577. The reversal of 121435550 is 55534121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1214306 + ... + 1214405.

It is an arithmetic number, because the mean of its divisors is an integer number (18822518).

Almost surely, 2^121435550 is an apocalyptic number.

121435550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121435550 is a deficient number, since it is larger than the sum of its proper divisors (104434666).

121435550 is a wasteful number, since it uses less digits than its factorization.

121435550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428723 (or 2428718 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 121435550 is about 11019.7799433564. The cubic root of 121435550 is about 495.2014960376.

Adding to 121435550 its reverse (55534121), we get a palindrome (176969671).

The spelling of 121435550 in words is "one hundred twenty-one million, four hundred thirty-five thousand, five hundred fifty".