1121021042311 has 4 divisors (see below), whose sum is σ = 1121365233792. Its totient is φ = 1120676850832.

The previous prime is 1121021042299. The next prime is 1121021042353. The reversal of 1121021042311 is 1132401201211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121021042311 - 2⁵ = 1121021042279 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 (1121021045311) 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 3 ways as a sum of consecutive naturals, for example, 172090855 + ... + 172097368.

It is an arithmetic number, because the mean of its divisors is an integer number (280341308448).

Almost surely, 2^{1121021042311} is an apocalyptic number.

1121021042311 is a deficient number, since it is larger than the sum of its proper divisors (344191481).

1121021042311 is an equidigital number, since it uses as much as digits as its factorization.

1121021042311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344191480.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1121021042311 its reverse (1132401201211), we get a palindrome (2253422243522).

The spelling of 1121021042311 in words is "one trillion, one hundred twenty-one billion, twenty-one million, forty-two thousand, three hundred eleven".