1220103856 has 10 divisors (see below), whose sum is σ = 2363951252. Its totient is φ = 610051920.

The previous prime is 1220103809. The next prime is 1220103919. The reversal of 1220103856 is 6583010221.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38128230 + ... + 38128261.

Almost surely, 2^1220103856 is an apocalyptic number.

1220103856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1220103856 is a deficient number, since it is larger than the sum of its proper divisors (1143847396).

1220103856 is an equidigital number, since it uses as much as digits as its factorization.

1220103856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76256499 (or 76256493 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1220103856 is about 34929.9850558227. The cubic root of 1220103856 is about 1068.5600498415.

The spelling of 1220103856 in words is "one billion, two hundred twenty million, one hundred three thousand, eight hundred fifty-six".