1001112121023 has 16 divisors (see below), whose sum is σ = 1529027302656. Its totient is φ = 570742899840.

The previous prime is 1001112121003. The next prime is 1001112121033. The reversal of 1001112121023 is 3201212111001.

It is not a de Polignac number, because 1001112121023 - 2⁹ = 1001112120511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001112120993 and 1001112121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001112121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55039413 + ... + 55057598.

It is an arithmetic number, because the mean of its divisors is an integer number (95564206416).

Almost surely, 2^{1001112121023} is an apocalyptic number.

1001112121023 is a deficient number, since it is larger than the sum of its proper divisors (527915181633).

1001112121023 is a wasteful number, since it uses less digits than its factorization.

1001112121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110097454.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1001112121023 its reverse (3201212111001), we get a palindrome (4202324232024).

The spelling of 1001112121023 in words is "one trillion, one billion, one hundred twelve million, one hundred twenty-one thousand, twenty-three".