11111202009997 has 2 divisors, whose sum is σ = 11111202009998. Its totient is φ = 11111202009996.

The previous prime is 11111202009931. The next prime is 11111202010009. The reversal of 11111202009997 is 79990020211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10488698367876 + 622503642121 = 3238626^2 + 788989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111202009997 is a prime.

It is a super-2 number, since 2×11111202009997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111202009917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555601004998 + 5555601004999.

It is an arithmetic number, because the mean of its divisors is an integer number (5555601004999).

Almost surely, 2^{11111202009997} is an apocalyptic number.

It is an amenable number.

11111202009997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111202009997 is an equidigital number, since it uses as much as digits as its factorization.

11111202009997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 43.

The spelling of 11111202009997 in words is "eleven trillion, one hundred eleven billion, two hundred two million, nine thousand, nine hundred ninety-seven".