121010553 has 12 divisors (see below), whose sum is σ = 176171008. Its totient is φ = 80037720.

The previous prime is 121010551. The next prime is 121010569. The reversal of 121010553 is 355010121.

121010553 is a `hidden beast` number, since 12 + 101 + 0 + 553 = 666.

It is not a de Polignac number, because 121010553 - 2¹ = 121010551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121010551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51793 + ... + 54078.

Almost surely, 2^121010553 is an apocalyptic number.

It is an amenable number.

121010553 is a deficient number, since it is larger than the sum of its proper divisors (55160455).

121010553 is a wasteful number, since it uses less digits than its factorization.

121010553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106004 (or 106001 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 121010553 is about 11000.4796713598. The cubic root of 121010553 is about 494.6231229870.

Adding to 121010553 its reverse (355010121), we get a palindrome (476020674).

The spelling of 121010553 in words is "one hundred twenty-one million, ten thousand, five hundred fifty-three".