1135401121 has 2 divisors, whose sum is σ = 1135401122. Its totient is φ = 1135401120.

The previous prime is 1135401023. The next prime is 1135401131. The reversal of 1135401121 is 1211045311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857845521 + 277555600 = 29289^2 + 16660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135401121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1135401131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567700560 + 567700561.

It is an arithmetic number, because the mean of its divisors is an integer number (567700561).

Almost surely, 2^1135401121 is an apocalyptic number.

It is an amenable number.

1135401121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135401121 is an equidigital number, since it uses as much as digits as its factorization.

1135401121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1135401121 is about 33695.7136888359. The cubic root of 1135401121 is about 1043.2372994136.

Adding to 1135401121 its reverse (1211045311), we get a palindrome (2346446432).

The spelling of 1135401121 in words is "one billion, one hundred thirty-five million, four hundred one thousand, one hundred twenty-one".