1121945029 has 2 divisors, whose sum is σ = 1121945030. Its totient is φ = 1121945028.

The previous prime is 1121945023. The next prime is 1121945059. The reversal of 1121945029 is 9205491211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1061260929 + 60684100 = 32577^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121945029 - 2²¹ = 1119847877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121944985 and 1121945003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121945023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560972514 + 560972515.

It is an arithmetic number, because the mean of its divisors is an integer number (560972515).

Almost surely, 2^1121945029 is an apocalyptic number.

It is an amenable number.

1121945029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121945029 is an equidigital number, since it uses as much as digits as its factorization.

1121945029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1121945029 is about 33495.4478847500. The cubic root of 1121945029 is about 1039.0996364916.

The spelling of 1121945029 in words is "one billion, one hundred twenty-one million, nine hundred forty-five thousand, twenty-nine".