121026550 has 12 divisors (see below), whose sum is σ = 225109476. Its totient is φ = 48410600.

The previous prime is 121026517. The next prime is 121026559. The reversal of 121026550 is 55620121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121026559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1210216 + ... + 1210315.

It is an arithmetic number, because the mean of its divisors is an integer number (18759123).

Almost surely, 2^121026550 is an apocalyptic number.

121026550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121026550 is a deficient number, since it is larger than the sum of its proper divisors (104082926).

121026550 is a wasteful number, since it uses less digits than its factorization.

121026550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420543 (or 2420538 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 121026550 is about 11001.2067519886. The cubic root of 121026550 is about 494.6449176081.

Adding to 121026550 its reverse (55620121), we get a palindrome (176646671).

The spelling of 121026550 in words is "one hundred twenty-one million, twenty-six thousand, five hundred fifty".