1212030103 has 4 divisors (see below), whose sum is σ = 1264727088. Its totient is φ = 1159333120.

The previous prime is 1212030073. The next prime is 1212030107. The reversal of 1212030103 is 3010302121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3010302121 = 587 ⋅5128283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212030103 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 (1212030107) 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, 26348458 + ... + 26348503.

It is an arithmetic number, because the mean of its divisors is an integer number (316181772).

Almost surely, 2^1212030103 is an apocalyptic number.

1212030103 is a deficient number, since it is larger than the sum of its proper divisors (52696985).

1212030103 is an equidigital number, since it uses as much as digits as its factorization.

1212030103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52696984.

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

The square root of 1212030103 is about 34814.2227114149. Note that the first 3 decimals coincide. The cubic root of 1212030103 is about 1066.1978493267.

Adding to 1212030103 its reverse (3010302121), we get a palindrome (4222332224).

The spelling of 1212030103 in words is "one billion, two hundred twelve million, thirty thousand, one hundred three".