1121021011423 has 2 divisors, whose sum is σ = 1121021011424. Its totient is φ = 1121021011422.

The previous prime is 1121021011417. The next prime is 1121021011469. The reversal of 1121021011423 is 3241101201211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121021011423 - 2⁵ = 1121021011391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121021011423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121021011223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510505711 + 560510505712.

It is an arithmetic number, because the mean of its divisors is an integer number (560510505712).

Almost surely, 2^{1121021011423} is an apocalyptic number.

1121021011423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121021011423 is an equidigital number, since it uses as much as digits as its factorization.

1121021011423 is an evil number, because the sum of its binary digits is even.

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

Adding to 1121021011423 its reverse (3241101201211), we get a palindrome (4362122212634).

The spelling of 1121021011423 in words is "one trillion, one hundred twenty-one billion, twenty-one million, eleven thousand, four hundred twenty-three".