1121554229 has 2 divisors, whose sum is σ = 1121554230. Its totient is φ = 1121554228.

The previous prime is 1121554219. The next prime is 1121554271. The reversal of 1121554229 is 9224551211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 948763204 + 172791025 = 30802^2 + 13145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121554229 - 2⁸ = 1121553973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121554195 and 1121554204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121554219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560777114 + 560777115.

It is an arithmetic number, because the mean of its divisors is an integer number (560777115).

Almost surely, 2^1121554229 is an apocalyptic number.

It is an amenable number.

1121554229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121554229 is an equidigital number, since it uses as much as digits as its factorization.

1121554229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 32.

The square root of 1121554229 is about 33489.6137481459. The cubic root of 1121554229 is about 1038.9789748176.

The spelling of 1121554229 in words is "one billion, one hundred twenty-one million, five hundred fifty-four thousand, two hundred twenty-nine".