113121012001 has 4 divisors (see below), whose sum is σ = 115255370772. Its totient is φ = 110986653232.

The previous prime is 113121011989. The next prime is 113121012029. The reversal of 113121012001 is 100210121311.

It is a happy number.

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 84578598976 + 28542413025 = 290824^2 + 168945^2 .

It is a cyclic number.

It is not a de Polignac number, because 113121012001 - 2¹⁹ = 113120487713 is a prime.

It is a super-3 number, since 3×113121012001³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113121012041) 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, 1067179306 + ... + 1067179411.

It is an arithmetic number, because the mean of its divisors is an integer number (28813842693).

Almost surely, 2^113121012001 is an apocalyptic number.

It is an amenable number.

113121012001 is a deficient number, since it is larger than the sum of its proper divisors (2134358771).

113121012001 is an equidigital number, since it uses as much as digits as its factorization.

113121012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134358770.

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

Adding to 113121012001 its reverse (100210121311), we get a palindrome (213331133312).

The spelling of 113121012001 in words is "one hundred thirteen billion, one hundred twenty-one million, twelve thousand, one".