1121002020197 has 2 divisors, whose sum is σ = 1121002020198. Its totient is φ = 1121002020196.

The previous prime is 1121002020169. The next prime is 1121002020223. The reversal of 1121002020197 is 7910202001211.

It is an a-pointer prime, because the next prime (1121002020223) can be obtained adding 1121002020197 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043403003841 + 77599016356 = 1021471^2 + 278566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121002020197 - 2⁶ = 1121002020133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121002022197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560501010098 + 560501010099.

It is an arithmetic number, because the mean of its divisors is an integer number (560501010099).

Almost surely, 2^{1121002020197} is an apocalyptic number.

It is an amenable number.

1121002020197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121002020197 is an equidigital number, since it uses as much as digits as its factorization.

1121002020197 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 26.

The spelling of 1121002020197 in words is "one trillion, one hundred twenty-one billion, two million, twenty thousand, one hundred ninety-seven".