121033120021 has 8 divisors (see below), whose sum is σ = 132264969984. Its totient is φ = 109839409920.

The previous prime is 121033119989. The next prime is 121033120081. The reversal of 121033120021 is 120021330121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121033120021 - 2⁵ = 121033119989 is a prime.

It is a super-2 number, since 2×121033120021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121033119977 and 121033120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033120081) 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 7 ways as a sum of consecutive naturals, for example, 9528325 + ... + 9541018.

It is an arithmetic number, because the mean of its divisors is an integer number (16533121248).

Almost surely, 2^121033120021 is an apocalyptic number.

121033120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121033120021 is a deficient number, since it is larger than the sum of its proper divisors (11231849963).

121033120021 is a wasteful number, since it uses less digits than its factorization.

121033120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19069931.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121033120021 its reverse (120021330121), we get a palindrome (241054450142).

The spelling of 121033120021 in words is "one hundred twenty-one billion, thirty-three million, one hundred twenty thousand, twenty-one".