121010856 has 32 divisors (see below), whose sum is σ = 312288000. Its totient is φ = 39035520.

The previous prime is 121010849. The next prime is 121010861. The reversal of 121010856 is 658010121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80581 + ... + 82068.

It is an arithmetic number, because the mean of its divisors is an integer number (9759000).

Almost surely, 2^121010856 is an apocalyptic number.

It is an amenable number.

121010856 is an abundant number, since it is smaller than the sum of its proper divisors (191277144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121010856 is a wasteful number, since it uses less digits than its factorization.

121010856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162689 (or 162685 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 121010856 is about 11000.4934434779. The cubic root of 121010856 is about 494.6235358179.

Adding to 121010856 its reverse (658010121), we get a palindrome (779020977).

The spelling of 121010856 in words is "one hundred twenty-one million, ten thousand, eight hundred fifty-six".