1121131132021 has 4 divisors (see below), whose sum is σ = 1169875963872. Its totient is φ = 1072386300172.

The previous prime is 1121131132019. The next prime is 1121131132039. The reversal of 1121131132021 is 1202311311211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121131132021 - 2¹ = 1121131132019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121131132021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121131132321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24372415891 + ... + 24372415936.

It is an arithmetic number, because the mean of its divisors is an integer number (292468990968).

Almost surely, 2^{1121131132021} is an apocalyptic number.

It is an amenable number.

1121131132021 is a deficient number, since it is larger than the sum of its proper divisors (48744831851).

1121131132021 is an equidigital number, since it uses as much as digits as its factorization.

1121131132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48744831850.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121131132021 its reverse (1202311311211), we get a palindrome (2323442443232).

The spelling of 1121131132021 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, twenty-one".