121231301321021 has 8 divisors (see below), whose sum is σ = 121384680986688. Its totient is φ = 121077993960000.

The previous prime is 121231301320979. The next prime is 121231301321033. The reversal of 121231301321021 is 120123103132121.

It is a happy number.

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 121231301321021 - 2³⁴ = 121214121451837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121231301351021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14720300 + ... + 21427781.

It is an arithmetic number, because the mean of its divisors is an integer number (15173085123336).

Almost surely, 2^{121231301321021} is an apocalyptic number.

It is an amenable number.

121231301321021 is a deficient number, since it is larger than the sum of its proper divisors (153379665667).

121231301321021 is a wasteful number, since it uses less digits than its factorization.

121231301321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36152323.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121231301321021 its reverse (120123103132121), we get a palindrome (241354404453142).

The spelling of 121231301321021 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, three hundred one million, three hundred twenty-one thousand, twenty-one".