100000012121101 has 4 divisors (see below), whose sum is σ = 100015207388604. Its totient is φ = 99984816853600.

The previous prime is 100000012121099. The next prime is 100000012121161. The reversal of 100000012121101 is 101121210000001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9048485124900 + 90951526996201 = 3008070^2 + 9536851^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000012121101 - 2¹ = 100000012121099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000012121161) 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, 7597623880 + ... + 7597637041.

It is an arithmetic number, because the mean of its divisors is an integer number (25003801847151).

Almost surely, 2^{100000012121101} is an apocalyptic number.

It is an amenable number.

100000012121101 is a deficient number, since it is larger than the sum of its proper divisors (15195267503).

100000012121101 is an equidigital number, since it uses as much as digits as its factorization.

100000012121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15195267502.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100000012121101 its reverse (101121210000001), we get a palindrome (201121222121102).

The spelling of 100000012121101 in words is "one hundred trillion, twelve million, one hundred twenty-one thousand, one hundred one".