1220220041 has 4 divisors (see below), whose sum is σ = 1226352000. Its totient is φ = 1214088084.

The previous prime is 1220220031. The next prime is 1220220049. The reversal of 1220220041 is 1400220221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1400220221 = 401 ⋅3491821.

It is a cyclic number.

It is not a de Polignac number, because 1220220041 - 2²² = 1216025737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220219998 and 1220220025.

It is not an unprimeable number, because it can be changed into a prime (1220220049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3065681 + ... + 3066078.

It is an arithmetic number, because the mean of its divisors is an integer number (306588000).

Almost surely, 2^1220220041 is an apocalyptic number.

It is an amenable number.

1220220041 is a deficient number, since it is larger than the sum of its proper divisors (6131959).

1220220041 is an equidigital number, since it uses as much as digits as its factorization.

1220220041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131958.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220220041 is about 34931.6481288816. The cubic root of 1220220041 is about 1068.5939668200.

Adding to 1220220041 its reverse (1400220221), we get a palindrome (2620440262).

The spelling of 1220220041 in words is "one billion, two hundred twenty million, two hundred twenty thousand, forty-one".