1121012001021 has 64 divisors (see below), whose sum is σ = 1754258881536. Its totient is φ = 629208960000.

The previous prime is 1121012001019. The next prime is 1121012001203. The reversal of 1121012001021 is 1201002101211.

It is not a de Polignac number, because 1121012001021 - 2¹ = 1121012001019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121012000988 and 1121012001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121012001821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11639355 + ... + 11735271.

It is an arithmetic number, because the mean of its divisors is an integer number (27410295024).

Almost surely, 2^{1121012001021} is an apocalyptic number.

1121012001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121012001021 is a deficient number, since it is larger than the sum of its proper divisors (633246880515).

1121012001021 is a wasteful number, since it uses less digits than its factorization.

1121012001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96282.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121012001021 its reverse (1201002101211), we get a palindrome (2322014102232).

The spelling of 1121012001021 in words is "one trillion, one hundred twenty-one billion, twelve million, one thousand, twenty-one".