121440032001 has 8 divisors (see below), whose sum is σ = 179911158560. Its totient is φ = 80960021316.

The previous prime is 121440031963. The next prime is 121440032003. The reversal of 121440032001 is 100230044121.

121440032001 is a `hidden beast` number, since 1 + 21 + 440 + 0 + 3 + 200 + 1 = 666.

It is not a de Polignac number, because 121440032001 - 2¹⁰ = 121440030977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121440032003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248889455 + ... + 2248889508.

It is an arithmetic number, because the mean of its divisors is an integer number (22488894820).

Almost surely, 2^121440032001 is an apocalyptic number.

It is an amenable number.

121440032001 is a deficient number, since it is larger than the sum of its proper divisors (58471126559).

121440032001 is an equidigital number, since it uses as much as digits as its factorization.

121440032001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497778972 (or 4497778966 counting only the distinct ones).

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

Adding to 121440032001 its reverse (100230044121), we get a palindrome (221670076122).

The spelling of 121440032001 in words is "one hundred twenty-one billion, four hundred forty million, thirty-two thousand, one".