1102003213 has 4 divisors (see below), whose sum is σ = 1102688028. Its totient is φ = 1101318400.

The previous prime is 1102003187. The next prime is 1102003229. The reversal of 1102003213 is 3123002011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123002011 = 4153 ⋅751987.

It can be written as a sum of positive squares in 2 ways, for example, as 928238089 + 173765124 = 30467^2 + 13182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102003213 - 2²⁵ = 1068448781 is a prime.

It is a super-2 number, since 2×1102003213² = 2428822162924646738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102003193 and 1102003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102003013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339988 + ... + 343213.

It is an arithmetic number, because the mean of its divisors is an integer number (275672007).

Almost surely, 2^1102003213 is an apocalyptic number.

It is an amenable number.

1102003213 is a deficient number, since it is larger than the sum of its proper divisors (684815).

1102003213 is an equidigital number, since it uses as much as digits as its factorization.

1102003213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684814.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1102003213 is about 33196.4337391835. The cubic root of 1102003213 is about 1032.9063648331.

Adding to 1102003213 its reverse (3123002011), we get a palindrome (4225005224).

The spelling of 1102003213 in words is "one billion, one hundred two million, three thousand, two hundred thirteen".