112121002001 has 4 divisors (see below), whose sum is σ = 113656906212. Its totient is φ = 110585097792.

The previous prime is 112121001953. The next prime is 112121002073. The reversal of 112121002001 is 100200121211.

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 20735712001 + 91385290000 = 143999^2 + 302300^2 .

It is a cyclic number.

It is not a de Polignac number, because 112121002001 - 2³⁴ = 94941132817 is a prime.

It is a super-2 number, since 2×112121002001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121002901) 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, 767951996 + ... + 767952141.

It is an arithmetic number, because the mean of its divisors is an integer number (28414226553).

Almost surely, 2^112121002001 is an apocalyptic number.

It is an amenable number.

112121002001 is a deficient number, since it is larger than the sum of its proper divisors (1535904211).

112121002001 is an equidigital number, since it uses as much as digits as its factorization.

112121002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535904210.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 112121002001 its reverse (100200121211), we get a palindrome (212321123212).

The spelling of 112121002001 in words is "one hundred twelve billion, one hundred twenty-one million, two thousand, one".