1102102021 has 2 divisors, whose sum is σ = 1102102022. Its totient is φ = 1102102020.

The previous prime is 1102102007. The next prime is 1102102031. The reversal of 1102102021 is 1202012011.

It is an a-pointer prime, because the next prime (1102102031) can be obtained adding 1102102021 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649689121 + 452412900 = 25489^2 + 21270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102102021 - 2¹⁵ = 1102069253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102101989 and 1102102007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102102031) 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, 551051010 + 551051011.

It is an arithmetic number, because the mean of its divisors is an integer number (551051011).

Almost surely, 2^1102102021 is an apocalyptic number.

It is an amenable number.

1102102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102102021 is an equidigital number, since it uses as much as digits as its factorization.

1102102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1102102021 is about 33197.9219379768. The cubic root of 1102102021 is about 1032.9372347860.

Adding to 1102102021 its reverse (1202012011), we get a palindrome (2304114032).

The spelling of 1102102021 in words is "one billion, one hundred two million, one hundred two thousand, twenty-one".