121021343000001 has 24 divisors (see below), whose sum is σ = 181289914702624. Its totient is φ = 80677817640000.

The previous prime is 121021342999969. The next prime is 121021343000023. The reversal of 121021343000001 is 100000343120121.

121021343000001 is a `hidden beast` number, since 1 + 21 + 0 + 213 + 430 + 0 + 0 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 121021343000001 - 2⁵ = 121021342999969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021343000071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3106936 + ... + 15864921.

Almost surely, 2^{121021343000001} is an apocalyptic number.

It is an amenable number.

121021343000001 is a deficient number, since it is larger than the sum of its proper divisors (60268571702623).

121021343000001 is an equidigital number, since it uses as much as digits as its factorization.

121021343000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18998123 (or 18998111 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121021343000001 its reverse (100000343120121), we get a palindrome (221021686120122).

The spelling of 121021343000001 in words is "one hundred twenty-one trillion, twenty-one billion, three hundred forty-three million, one", and thus it is an aban number.