1220404241 has 12 divisors (see below), whose sum is σ = 1427097600. Its totient is φ = 1040576040.

The previous prime is 1220404231. The next prime is 1220404243. The reversal of 1220404241 is 1424040221.

It is a de Polignac number, because none of the positive numbers 2^k-1220404241 is a prime.

It is a super-2 number, since 2×1220404241² = 2978773022901572162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220404243) 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, 55841 + ... + 74558.

It is an arithmetic number, because the mean of its divisors is an integer number (118924800).

Almost surely, 2^1220404241 is an apocalyptic number.

It is an amenable number.

1220404241 is a deficient number, since it is larger than the sum of its proper divisors (206693359).

1220404241 is a wasteful number, since it uses less digits than its factorization.

1220404241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130604 (or 130597 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1220404241 is about 34934.2846069588. The cubic root of 1220404241 is about 1068.6477344735.

Adding to 1220404241 its reverse (1424040221), we get a palindrome (2644444462).

The spelling of 1220404241 in words is "one billion, two hundred twenty million, four hundred four thousand, two hundred forty-one".