1102120001221 has 2 divisors, whose sum is σ = 1102120001222. Its totient is φ = 1102120001220.

The previous prime is 1102120001209. The next prime is 1102120001233. The reversal of 1102120001221 is 1221000212011.

It is a balanced prime because it is at equal distance from previous prime (1102120001209) and next prime (1102120001233).

It can be written as a sum of positive squares in only one way, i.e., 892826561025 + 209293440196 = 944895^2 + 457486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102120001221 - 2¹¹ = 1102119999173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102120001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551060000610 + 551060000611.

It is an arithmetic number, because the mean of its divisors is an integer number (551060000611).

Almost surely, 2^{1102120001221} is an apocalyptic number.

It is an amenable number.

1102120001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102120001221 is an equidigital number, since it uses as much as digits as its factorization.

1102120001221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1102120001221 its reverse (1221000212011), we get a palindrome (2323120213232).

The spelling of 1102120001221 in words is "one trillion, one hundred two billion, one hundred twenty million, one thousand, two hundred twenty-one".