1100021001217 has 2 divisors, whose sum is σ = 1100021001218. Its totient is φ = 1100021001216.

The previous prime is 1100021001199. The next prime is 1100021001229. The reversal of 1100021001217 is 7121001200011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838691471601 + 261329529616 = 915801^2 + 511204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100021001217 - 2¹¹ = 1100020999169 is a prime.

It is a super-3 number, since 3×1100021001217³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1100021001217.

It is not a weakly prime, because it can be changed into another prime (1100021001917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550010500608 + 550010500609.

It is an arithmetic number, because the mean of its divisors is an integer number (550010500609).

Almost surely, 2^{1100021001217} is an apocalyptic number.

It is an amenable number.

1100021001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100021001217 is an equidigital number, since it uses as much as digits as its factorization.

1100021001217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 1100021001217 its reverse (7121001200011), we get a palindrome (8221022201228).

The spelling of 1100021001217 in words is "one trillion, one hundred billion, twenty-one million, one thousand, two hundred seventeen".