1102021101 has 6 divisors (see below), whose sum is σ = 1591808270. Its totient is φ = 734680728.

The previous prime is 1102021091. The next prime is 1102021111. The reversal of 1102021101 is 1011202011.

It is a happy number.

1102021101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1102021091) and next prime (1102021111).

It can be written as a sum of positive squares in only one way, i.e., 855562500 + 246458601 = 29250^2 + 15699^2 .

It is not a de Polignac number, because 1102021101 - 2⁷ = 1102020973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 122446789 = 1102021101 / (1 + 1 + 0 + 2 + 0 + 2 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102021111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61223386 + ... + 61223403.

Almost surely, 2^1102021101 is an apocalyptic number.

It is an amenable number.

1102021101 is a deficient number, since it is larger than the sum of its proper divisors (489787169).

1102021101 is a wasteful number, since it uses less digits than its factorization.

1102021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122446795 (or 122446792 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1102021101 is about 33196.7031646216. The cubic root of 1102021101 is about 1032.9119536036.

Adding to 1102021101 its reverse (1011202011), we get a palindrome (2113223112).

The spelling of 1102021101 in words is "one billion, one hundred two million, twenty-one thousand, one hundred one".