20121200240001 has 64 divisors (see below), whose sum is σ = 31099375104000. Its totient is φ = 11334612185856.

The previous prime is 20121200239981. The next prime is 20121200240017. The reversal of 20121200240001 is 10004200212102.

It is not a de Polignac number, because 20121200240001 - 2⁷ = 20121200239873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121200245001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1675783140 + ... + 1675795146.

It is an arithmetic number, because the mean of its divisors is an integer number (485927736000).

Almost surely, 2^{20121200240001} is an apocalyptic number.

20121200240001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20121200240001 is a deficient number, since it is larger than the sum of its proper divisors (10978174863999).

20121200240001 is a wasteful number, since it uses less digits than its factorization.

20121200240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16158.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20121200240001 its reverse (10004200212102), we get a palindrome (30125400452103).

The spelling of 20121200240001 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, two hundred forty thousand, one".