121400243001 has 12 divisors (see below), whose sum is σ = 181012549120. Its totient is φ = 78322737240.

The previous prime is 121400242993. The next prime is 121400243053. The reversal of 121400243001 is 100342004121.

121400243001 is a `hidden beast` number, since 1 + 21 + 400 + 243 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 121400243001 - 2³ = 121400242993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121400243071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217562881 + ... + 217563438.

Almost surely, 2^121400243001 is an apocalyptic number.

It is an amenable number.

121400243001 is a deficient number, since it is larger than the sum of its proper divisors (59612306119).

121400243001 is a wasteful number, since it uses less digits than its factorization.

121400243001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435126356 (or 435126353 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121400243001 its reverse (100342004121), we get a palindrome (221742247122).

The spelling of 121400243001 in words is "one hundred twenty-one billion, four hundred million, two hundred forty-three thousand, one".