121055828 has 6 divisors (see below), whose sum is σ = 211847706. Its totient is φ = 60527912.

The previous prime is 121055819. The next prime is 121055833. The reversal of 121055828 is 828550121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 96275344 + 24780484 = 9812^2 + 4978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121055794 and 121055803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15131975 + ... + 15131982.

It is an arithmetic number, because the mean of its divisors is an integer number (35307951).

Almost surely, 2^121055828 is an apocalyptic number.

It is an amenable number.

121055828 is a deficient number, since it is larger than the sum of its proper divisors (90791878).

121055828 is a wasteful number, since it uses less digits than its factorization.

121055828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30263961 (or 30263959 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 121055828 is about 11002.5373437221. The cubic root of 121055828 is about 494.6848015461.

The spelling of 121055828 in words is "one hundred twenty-one million, fifty-five thousand, eight hundred twenty-eight".