1220103120 has 80 divisors (see below), whose sum is σ = 3884572800. Its totient is φ = 316564992.

The previous prime is 1220103119. The next prime is 1220103139. The reversal of 1220103120 is 213010221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1220103096 and 1220103105.

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, 59820 + ... + 77579.

It is an arithmetic number, because the mean of its divisors is an integer number (48557160).

Almost surely, 2^1220103120 is an apocalyptic number.

1220103120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220103120 is an abundant number, since it is smaller than the sum of its proper divisors (2664469680).

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

1220103120 is a wasteful number, since it uses less digits than its factorization.

1220103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137452 (or 137446 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1220103120 is about 34929.9745204602. The cubic root of 1220103120 is about 1068.5598349799.

Adding to 1220103120 its reverse (213010221), we get a palindrome (1433113341).

The spelling of 1220103120 in words is "one billion, two hundred twenty million, one hundred three thousand, one hundred twenty".