1121021011399 has 2 divisors, whose sum is σ = 1121021011400. Its totient is φ = 1121021011398.

The previous prime is 1121021011393. The next prime is 1121021011417. The reversal of 1121021011399 is 9931101201211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121021011399 - 2³ = 1121021011391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121021011399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121021011391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510505699 + 560510505700.

It is an arithmetic number, because the mean of its divisors is an integer number (560510505700).

Almost surely, 2^{1121021011399} is an apocalyptic number.

1121021011399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121021011399 is an equidigital number, since it uses as much as digits as its factorization.

1121021011399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 31.

The spelling of 1121021011399 in words is "one trillion, one hundred twenty-one billion, twenty-one million, eleven thousand, three hundred ninety-nine".