1120340021 has 2 divisors, whose sum is σ = 1120340022. Its totient is φ = 1120340020.

The previous prime is 1120339973. The next prime is 1120340029. The reversal of 1120340021 is 1200430211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1048852996 + 71487025 = 32386^2 + 8455^2 .

It is an emirp because it is prime and its reverse (1200430211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1120340021 - 2¹⁴ = 1120323637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120339978 and 1120340005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120340029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560170010 + 560170011.

It is an arithmetic number, because the mean of its divisors is an integer number (560170011).

Almost surely, 2^1120340021 is an apocalyptic number.

It is an amenable number.

1120340021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120340021 is an equidigital number, since it uses as much as digits as its factorization.

1120340021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1120340021 is about 33471.4807111965. The cubic root of 1120340021 is about 1038.6039024178.

Adding to 1120340021 its reverse (1200430211), we get a palindrome (2320770232).

The spelling of 1120340021 in words is "one billion, one hundred twenty million, three hundred forty thousand, twenty-one".