1121123001949 has 2 divisors, whose sum is σ = 1121123001950. Its totient is φ = 1121123001948.

The previous prime is 1121123001941. The next prime is 1121123002009. The reversal of 1121123001949 is 9491003211211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1033221425625 + 87901576324 = 1016475^2 + 296482^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121123001949 - 2³ = 1121123001941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121123001941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560561500974 + 560561500975.

It is an arithmetic number, because the mean of its divisors is an integer number (560561500975).

Almost surely, 2^{1121123001949} is an apocalyptic number.

It is an amenable number.

1121123001949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121123001949 is an equidigital number, since it uses as much as digits as its factorization.

1121123001949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 1121123001949 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-three million, one thousand, nine hundred forty-nine".