1120121521 has 2 divisors, whose sum is σ = 1120121522. Its totient is φ = 1120121520.

The previous prime is 1120121479. The next prime is 1120121533. The reversal of 1120121521 is 1251210211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1119906225 + 215296 = 33465^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120121521 - 2²⁵ = 1086567089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120121495 and 1120121504.

It is not a weakly prime, because it can be changed into another prime (1120121581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560060760 + 560060761.

It is an arithmetic number, because the mean of its divisors is an integer number (560060761).

Almost surely, 2^1120121521 is an apocalyptic number.

It is an amenable number.

1120121521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120121521 is an equidigital number, since it uses as much as digits as its factorization.

1120121521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1120121521 is about 33468.2165793160. The cubic root of 1120121521 is about 1038.5363783616.

Adding to 1120121521 its reverse (1251210211), we get a palindrome (2371331732).

The spelling of 1120121521 in words is "one billion, one hundred twenty million, one hundred twenty-one thousand, five hundred twenty-one".