100121311200001 has 16 divisors (see below), whose sum is σ = 124610793552000. Its totient is φ = 78326784505728.

The previous prime is 100121311199977. The next prime is 100121311200019. The reversal of 100121311200001 is 100002113121001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100121311200001 - 2¹³ = 100121311191809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (100121311200901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6181082851 + ... + 6181099048.

It is an arithmetic number, because the mean of its divisors is an integer number (7788174597000).

Almost surely, 2^{100121311200001} is an apocalyptic number.

It is an amenable number.

100121311200001 is a deficient number, since it is larger than the sum of its proper divisors (24489482351999).

100121311200001 is a wasteful number, since it uses less digits than its factorization.

100121311200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12362182008.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 100121311200001 its reverse (100002113121001), we get a palindrome (200123424321002).

The spelling of 100121311200001 in words is "one hundred trillion, one hundred twenty-one billion, three hundred eleven million, two hundred thousand, one".