1220134125 has 32 divisors (see below), whose sum is σ = 2320351488. Its totient is φ = 557774400.

The previous prime is 1220134121. The next prime is 1220134141. The reversal of 1220134125 is 5214310221.

1220134125 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220134125 - 2² = 1220134121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220134121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229782 + ... + 235031.

It is an arithmetic number, because the mean of its divisors is an integer number (72510984).

Almost surely, 2^1220134125 is an apocalyptic number.

1220134125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220134125 is a deficient number, since it is larger than the sum of its proper divisors (1100217363).

1220134125 is an equidigital number, since it uses as much as digits as its factorization.

1220134125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464838 (or 464828 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1220134125 is about 34930.4183341683. The cubic root of 1220134125 is about 1068.5688862413.

Adding to 1220134125 its reverse (5214310221), we get a palindrome (6434444346).

The spelling of 1220134125 in words is "one billion, two hundred twenty million, one hundred thirty-four thousand, one hundred twenty-five".