1220212103 has 16 divisors (see below), whose sum is σ = 1339618560. Its totient is φ = 1102248000.

The previous prime is 1220212093. The next prime is 1220212109. The reversal of 1220212103 is 3012120221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220212103 - 2¹⁶ = 1220146567 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 (1220212109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030003 + ... + 2030603.

It is an arithmetic number, because the mean of its divisors is an integer number (83726160).

Almost surely, 2^1220212103 is an apocalyptic number.

1220212103 is a deficient number, since it is larger than the sum of its proper divisors (119406457).

1220212103 is a wasteful number, since it uses less digits than its factorization.

1220212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1220212103 is about 34931.5345068034. The cubic root of 1220212103 is about 1068.5916496102.

Adding to 1220212103 its reverse (3012120221), we get a palindrome (4232332324).

The spelling of 1220212103 in words is "one billion, two hundred twenty million, two hundred twelve thousand, one hundred three".