1335721117 has 2 divisors, whose sum is σ = 1335721118. Its totient is φ = 1335721116.

The previous prime is 1335721111. The next prime is 1335721129. The reversal of 1335721117 is 7111275331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 910289241 + 425431876 = 30171^2 + 20626^2 .

It is a cyclic number.

It is not a de Polignac number, because 1335721117 - 2²⁷ = 1201503389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1335721111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667860558 + 667860559.

It is an arithmetic number, because the mean of its divisors is an integer number (667860559).

Almost surely, 2^1335721117 is an apocalyptic number.

It is an amenable number.

1335721117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1335721117 is an equidigital number, since it uses as much as digits as its factorization.

1335721117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 31.

The square root of 1335721117 is about 36547.5186161797. The cubic root of 1335721117 is about 1101.2990484763.

Adding to 1335721117 its reverse (7111275331), we get a palindrome (8446996448).

It can be divided in two parts, 133572 and 1117, that added together give a square (134689 = 367²).

The spelling of 1335721117 in words is "one billion, three hundred thirty-five million, seven hundred twenty-one thousand, one hundred seventeen".