1100102121221 has 2 divisors, whose sum is σ = 1100102121222. Its totient is φ = 1100102121220.

The previous prime is 1100102121193. The next prime is 1100102121233. The reversal of 1100102121221 is 1221212010011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852272390596 + 247829730625 = 923186^2 + 497825^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100102121221 - 2¹⁴ = 1100102104837 is a prime.

It is a super-2 number, since 2×1100102121221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100102121196 and 1100102121205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100102121271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550051060610 + 550051060611.

It is an arithmetic number, because the mean of its divisors is an integer number (550051060611).

Almost surely, 2^{1100102121221} is an apocalyptic number.

It is an amenable number.

1100102121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100102121221 is an equidigital number, since it uses as much as digits as its factorization.

1100102121221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1100102121221 its reverse (1221212010011), we get a palindrome (2321314131232).

The spelling of 1100102121221 in words is "one trillion, one hundred billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty-one".