1112120001001 has 4 divisors (see below), whose sum is σ = 1122322936900. Its totient is φ = 1101917065104.

The previous prime is 1112120000987. The next prime is 1112120001049. The reversal of 1112120001001 is 1001000212111.

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 808848409600 + 303271591401 = 899360^2 + 550701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112120001001 - 2²¹ = 1112117903849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112120001071) 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, 5101467786 + ... + 5101468003.

It is an arithmetic number, because the mean of its divisors is an integer number (280580734225).

Almost surely, 2^{1112120001001} is an apocalyptic number.

It is an amenable number.

1112120001001 is a deficient number, since it is larger than the sum of its proper divisors (10202935899).

1112120001001 is a wasteful number, since it uses less digits than its factorization.

1112120001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202935898.

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

Adding to 1112120001001 its reverse (1001000212111), we get a palindrome (2113120213112).

The spelling of 1112120001001 in words is "one trillion, one hundred twelve billion, one hundred twenty million, one thousand, one".