1220344102 has 4 divisors (see below), whose sum is σ = 1830516156. Its totient is φ = 610172050.

The previous prime is 1220344093. The next prime is 1220344117. The reversal of 1220344102 is 2014430221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2014430221 = 5021 ⋅401201.

It is a self number, because there is not a number n which added to its sum of digits gives 1220344102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305086024 + ... + 305086027.

It is an arithmetic number, because the mean of its divisors is an integer number (457629039).

Almost surely, 2^1220344102 is an apocalyptic number.

1220344102 is a deficient number, since it is larger than the sum of its proper divisors (610172054).

1220344102 is an equidigital number, since it uses as much as digits as its factorization.

1220344102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610172053.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1220344102 is about 34933.4238516639. The cubic root of 1220344102 is about 1068.6301806008.

Adding to 1220344102 its reverse (2014430221), we get a palindrome (3234774323).

The spelling of 1220344102 in words is "one billion, two hundred twenty million, three hundred forty-four thousand, one hundred two".