1111010021197 has 2 divisors, whose sum is σ = 1111010021198. Its totient is φ = 1111010021196.

The previous prime is 1111010021189. The next prime is 1111010021201. The reversal of 1111010021197 is 7911200101111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 881850586761 + 229159434436 = 939069^2 + 478706^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111010021197 - 2³ = 1111010021189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111010001197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555505010598 + 555505010599.

It is an arithmetic number, because the mean of its divisors is an integer number (555505010599).

Almost surely, 2^{1111010021197} is an apocalyptic number.

It is an amenable number.

1111010021197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111010021197 is an equidigital number, since it uses as much as digits as its factorization.

1111010021197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 25.

The spelling of 1111010021197 in words is "one trillion, one hundred eleven billion, ten million, twenty-one thousand, one hundred ninety-seven".