11231221017017 has 2 divisors, whose sum is σ = 11231221017018. Its totient is φ = 11231221017016.

The previous prime is 11231221017013. The next prime is 11231221017047. The reversal of 11231221017017 is 71071012213211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6130358113936 + 5100862903081 = 2475956^2 + 2258509^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231221017017 - 2² = 11231221017013 is a prime.

It is a super-2 number, since 2×11231221017017² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11231221017013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615610508508 + 5615610508509.

It is an arithmetic number, because the mean of its divisors is an integer number (5615610508509).

Almost surely, 2^{11231221017017} is an apocalyptic number.

It is an amenable number.

11231221017017 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231221017017 is an equidigital number, since it uses as much as digits as its factorization.

11231221017017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 29.

The spelling of 11231221017017 in words is "eleven trillion, two hundred thirty-one billion, two hundred twenty-one million, seventeen thousand, seventeen".