112121100010001 has 4 divisors (see below), whose sum is σ = 112136135702052. Its totient is φ = 112106064317952.

The previous prime is 112121100009977. The next prime is 112121100010013. The reversal of 112121100010001 is 100010001121211.

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 31050794760976 + 81070305249025 = 5572324^2 + 9003905^2 .

It is a cyclic number.

It is not a de Polignac number, because 112121100010001 - 2⁶ = 112121100009937 is a prime.

It is a super-2 number, since 2×112121100010001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121100010021) 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, 7517834840 + ... + 7517849753.

It is an arithmetic number, because the mean of its divisors is an integer number (28034033925513).

Almost surely, 2^{112121100010001} is an apocalyptic number.

It is an amenable number.

112121100010001 is a deficient number, since it is larger than the sum of its proper divisors (15035692051).

112121100010001 is an equidigital number, since it uses as much as digits as its factorization.

112121100010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15035692050.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 112121100010001 its reverse (100010001121211), we get a palindrome (212131101131212).

The spelling of 112121100010001 in words is "one hundred twelve trillion, one hundred twenty-one billion, one hundred million, ten thousand, one".