1121161615021 has 16 divisors (see below), whose sum is σ = 1294362057600. Its totient is φ = 951268315968.

The previous prime is 1121161614997. The next prime is 1121161615031. The reversal of 1121161615021 is 1205161611211.

It is a cyclic number.

It is not a de Polignac number, because 1121161615021 - 2¹¹ = 1121161612973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121161615031) 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 15 ways as a sum of consecutive naturals, for example, 1744111 + ... + 2298748.

It is an arithmetic number, because the mean of its divisors is an integer number (80897628600).

Almost surely, 2^{1121161615021} is an apocalyptic number.

It is an amenable number.

1121161615021 is a deficient number, since it is larger than the sum of its proper divisors (173200442579).

1121161615021 is a wasteful number, since it uses less digits than its factorization.

1121161615021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043268.

The product of its (nonzero) digits is 720, while the sum is 28.

The spelling of 1121161615021 in words is "one trillion, one hundred twenty-one billion, one hundred sixty-one million, six hundred fifteen thousand, twenty-one".