1101221121197 has 2 divisors, whose sum is σ = 1101221121198. Its totient is φ = 1101221121196.

The previous prime is 1101221121191. The next prime is 1101221121229. The reversal of 1101221121197 is 7911211221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 953603028676 + 147618092521 = 976526^2 + 384211^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101221121197 - 2⁸ = 1101221120941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101221121191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610560598 + 550610560599.

It is an arithmetic number, because the mean of its divisors is an integer number (550610560599).

Almost surely, 2^{1101221121197} is an apocalyptic number.

It is an amenable number.

1101221121197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101221121197 is an equidigital number, since it uses as much as digits as its factorization.

1101221121197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 29.

The spelling of 1101221121197 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred ninety-seven".