1220331125 has 64 divisors (see below), whose sum is σ = 1733501952. Its totient is φ = 850924800.

The previous prime is 1220331097. The next prime is 1220331137. The reversal of 1220331125 is 5211330221.

It is not a de Polignac number, because 1220331125 - 2¹⁴ = 1220314741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220331097 and 1220331106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3849467 + ... + 3849783.

It is an arithmetic number, because the mean of its divisors is an integer number (27085968).

Almost surely, 2^1220331125 is an apocalyptic number.

It is an amenable number.

1220331125 is a deficient number, since it is larger than the sum of its proper divisors (513170827).

1220331125 is a wasteful number, since it uses less digits than its factorization.

1220331125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1220331125 is about 34933.2381121476. The cubic root of 1220331125 is about 1068.6263926903.

Adding to 1220331125 its reverse (5211330221), we get a palindrome (6431661346).

The spelling of 1220331125 in words is "one billion, two hundred twenty million, three hundred thirty-one thousand, one hundred twenty-five".