121010001112001 has 4 divisors (see below), whose sum is σ = 121780765450452. Its totient is φ = 120239236773552.

The previous prime is 121010001111931. The next prime is 121010001112019. The reversal of 121010001112001 is 100211100010121.

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 38303708622001 + 82706292490000 = 6188999^2 + 9094300^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010001112001 - 2²² = 121009996917697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121010001112051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385382168990 + ... + 385382169303.

It is an arithmetic number, because the mean of its divisors is an integer number (30445191362613).

Almost surely, 2^{121010001112001} is an apocalyptic number.

It is an amenable number.

121010001112001 is a deficient number, since it is larger than the sum of its proper divisors (770764338451).

121010001112001 is an equidigital number, since it uses as much as digits as its factorization.

121010001112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770764338450.

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

Adding to 121010001112001 its reverse (100211100010121), we get a palindrome (221221101122122).

The spelling of 121010001112001 in words is "one hundred twenty-one trillion, ten billion, one million, one hundred twelve thousand, one".