121333432421 has 8 divisors (see below), whose sum is σ = 130692954624. Its totient is φ = 112314256560.

The previous prime is 121333432403. The next prime is 121333432447. The reversal of 121333432421 is 124234333121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121333432421 is a prime.

It is a super-2 number, since 2×121333432421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121333432481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85085846 + ... + 85087271.

It is an arithmetic number, because the mean of its divisors is an integer number (16336619328).

Almost surely, 2^121333432421 is an apocalyptic number.

It is an amenable number.

121333432421 is a deficient number, since it is larger than the sum of its proper divisors (9359522203).

121333432421 is a wasteful number, since it uses less digits than its factorization.

121333432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170173171.

The product of its digits is 10368, while the sum is 29.

Adding to 121333432421 its reverse (124234333121), we get a palindrome (245567765542).

The spelling of 121333432421 in words is "one hundred twenty-one billion, three hundred thirty-three million, four hundred thirty-two thousand, four hundred twenty-one".