121133130021 has 48 divisors (see below), whose sum is σ = 191215140480. Its totient is φ = 76479163200.

The previous prime is 121133130017. The next prime is 121133130049. The reversal of 121133130021 is 120031331121.

121133130021 is a `hidden beast` number, since 1 + 2 + 11 + 331 + 300 + 21 = 666.

It is not a de Polignac number, because 121133130021 - 2² = 121133130017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121133129976 and 121133130003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121133130011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 457195 + ... + 671783.

It is an arithmetic number, because the mean of its divisors is an integer number (3983648760).

Almost surely, 2^121133130021 is an apocalyptic number.

It is an amenable number.

121133130021 is a deficient number, since it is larger than the sum of its proper divisors (70082010459).

121133130021 is a wasteful number, since it uses less digits than its factorization.

121133130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214728 (or 214716 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121133130021 its reverse (120031331121), we get a palindrome (241164461142).

The spelling of 121133130021 in words is "one hundred twenty-one billion, one hundred thirty-three million, one hundred thirty thousand, twenty-one".