1220123241 has 12 divisors (see below), whose sum is σ = 1786543668. Its totient is φ = 802272384.

The previous prime is 1220123239. The next prime is 1220123257. The reversal of 1220123241 is 1423210221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400160016 + 819963225 = 20004^2 + 28635^2 .

It is not a de Polignac number, because 1220123241 - 2¹ = 1220123239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220123291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 927900 + ... + 929213.

It is an arithmetic number, because the mean of its divisors is an integer number (148878639).

Almost surely, 2^1220123241 is an apocalyptic number.

It is an amenable number.

1220123241 is a deficient number, since it is larger than the sum of its proper divisors (566420427).

1220123241 is a wasteful number, since it uses less digits than its factorization.

1220123241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857192 (or 1857189 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1220123241 is about 34930.2625383778. The cubic root of 1220123241 is about 1068.5657089026.

Adding to 1220123241 its reverse (1423210221), we get a palindrome (2643333462).

The spelling of 1220123241 in words is "one billion, two hundred twenty million, one hundred twenty-three thousand, two hundred forty-one".