1101220100249 has 2 divisors, whose sum is σ = 1101220100250. Its totient is φ = 1101220100248.

The previous prime is 1101220100243. The next prime is 1101220100261. The reversal of 1101220100249 is 9420010221011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986277403225 + 114942697024 = 993115^2 + 339032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101220100249 - 2¹² = 1101220096153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101220100243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550610050124 + 550610050125.

It is an arithmetic number, because the mean of its divisors is an integer number (550610050125).

Almost surely, 2^{1101220100249} is an apocalyptic number.

It is an amenable number.

1101220100249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101220100249 is an equidigital number, since it uses as much as digits as its factorization.

1101220100249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 1101220100249 in words is "one trillion, one hundred one billion, two hundred twenty million, one hundred thousand, two hundred forty-nine".