1102020203 has 4 divisors (see below), whose sum is σ = 1103269128. Its totient is φ = 1100771280.

The previous prime is 1102020187. The next prime is 1102020251. The reversal of 1102020203 is 3020202011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020202011 = 797 ⋅3789463.

It is a cyclic number.

It is not a de Polignac number, because 1102020203 - 2⁴ = 1102020187 is a prime.

It is a super-2 number, since 2×1102020203² = 2428897055640322418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102020253) 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 in 3 ways as a sum of consecutive naturals, for example, 623138 + ... + 624903.

It is an arithmetic number, because the mean of its divisors is an integer number (275817282).

Almost surely, 2^1102020203 is an apocalyptic number.

1102020203 is a deficient number, since it is larger than the sum of its proper divisors (1248925).

1102020203 is an equidigital number, since it uses as much as digits as its factorization.

1102020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248924.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1102020203 is about 33196.6896391794. The cubic root of 1102020203 is about 1032.9116730418.

Adding to 1102020203 its reverse (3020202011), we get a palindrome (4122222214).

The spelling of 1102020203 in words is "one billion, one hundred two million, twenty thousand, two hundred three".