1200220103 has 4 divisors (see below), whose sum is σ = 1208854920. Its totient is φ = 1191585288.

The previous prime is 1200220081. The next prime is 1200220157. The reversal of 1200220103 is 3010220021.

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: 3010220021 = 269 ⋅11190409.

It is a cyclic number.

It is not a de Polignac number, because 1200220103 - 2⁶ = 1200220039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200220163) 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, 4317200 + ... + 4317477.

It is an arithmetic number, because the mean of its divisors is an integer number (302213730).

Almost surely, 2^1200220103 is an apocalyptic number.

1200220103 is a deficient number, since it is larger than the sum of its proper divisors (8634817).

1200220103 is an equidigital number, since it uses as much as digits as its factorization.

1200220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8634816.

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

The square root of 1200220103 is about 34644.1929188717. The cubic root of 1200220103 is about 1062.7235358605.

Adding to 1200220103 its reverse (3010220021), we get a palindrome (4210440124).

The spelling of 1200220103 in words is "one billion, two hundred million, two hundred twenty thousand, one hundred three".