1102020121249 has 2 divisors, whose sum is σ = 1102020121250. Its totient is φ = 1102020121248.

The previous prime is 1102020121193. The next prime is 1102020121261. The reversal of 1102020121249 is 9421210202011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661834315024 + 440185806225 = 813532^2 + 663465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102020121249 is a prime.

It is a super-2 number, since 2×1102020121249² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1102020122249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551010060624 + 551010060625.

It is an arithmetic number, because the mean of its divisors is an integer number (551010060625).

Almost surely, 2^{1102020121249} is an apocalyptic number.

It is an amenable number.

1102020121249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102020121249 is an equidigital number, since it uses as much as digits as its factorization.

1102020121249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 1102020121249 in words is "one trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, two hundred forty-nine".