11220121002197 has 2 divisors, whose sum is σ = 11220121002198. Its totient is φ = 11220121002196.

The previous prime is 11220121002179. The next prime is 11220121002263. The reversal of 11220121002197 is 79120012102211.

Together with previous prime (11220121002179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11116896308401 + 103224693796 = 3334201^2 + 321286^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220121002197 - 2³⁰ = 11219047260373 is a prime.

It is a super-2 number, since 2×11220121002197² (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 (11220151002197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610060501098 + 5610060501099.

It is an arithmetic number, because the mean of its divisors is an integer number (5610060501099).

Almost surely, 2^{11220121002197} is an apocalyptic number.

It is an amenable number.

11220121002197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220121002197 is an equidigital number, since it uses as much as digits as its factorization.

11220121002197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 11220121002197 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, one hundred ninety-seven".