1220103636 has 48 divisors (see below), whose sum is σ = 2897334720. Its totient is φ = 399559680.

The previous prime is 1220103613. The next prime is 1220103641. The reversal of 1220103636 is 6363010221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158026 + ... + 165566.

It is an arithmetic number, because the mean of its divisors is an integer number (60361140).

Almost surely, 2^1220103636 is an apocalyptic number.

It is an amenable number.

1220103636 is an abundant number, since it is smaller than the sum of its proper divisors (1677231084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220103636 is a wasteful number, since it uses less digits than its factorization.

1220103636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7784 (or 7782 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1220103636 is about 34929.9819066658. The cubic root of 1220103636 is about 1068.5599856165.

Adding to 1220103636 its reverse (6363010221), we get a palindrome (7583113857).

The spelling of 1220103636 in words is "one billion, two hundred twenty million, one hundred three thousand, six hundred thirty-six".