100121340104431 has 4 divisors (see below), whose sum is σ = 100142628933312. Its totient is φ = 100100051275552.

The previous prime is 100121340104413. The next prime is 100121340104453. The reversal of 100121340104431 is 134401043121001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100121340104431 is a prime.

It is a super-2 number, since 2×100121340104431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121340104396 and 100121340104405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121340105431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10644407386 + ... + 10644416791.

It is an arithmetic number, because the mean of its divisors is an integer number (25035657233328).

Almost surely, 2^{100121340104431} is an apocalyptic number.

100121340104431 is a deficient number, since it is larger than the sum of its proper divisors (21288828881).

100121340104431 is an equidigital number, since it uses as much as digits as its factorization.

100121340104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21288828880.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 100121340104431 its reverse (134401043121001), we get a palindrome (234522383225432).

The spelling of 100121340104431 in words is "one hundred trillion, one hundred twenty-one billion, three hundred forty million, one hundred four thousand, four hundred thirty-one".