1220855301 has 8 divisors (see below), whose sum is σ = 1808674560. Its totient is φ = 813903516.

The previous prime is 1220855261. The next prime is 1220855303. The reversal of 1220855301 is 1035580221.

It is a happy number.

1220855301 is a `hidden beast` number, since 122 + 0 + 8 + 5 + 530 + 1 = 666.

It is not a de Polignac number, because 1220855301 - 2¹⁰ = 1220854277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45216863 = 1220855301 / (1 + 2 + 2 + 0 + 8 + 5 + 5 + 3 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220855303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22608405 + ... + 22608458.

It is an arithmetic number, because the mean of its divisors is an integer number (226084320).

Almost surely, 2^1220855301 is an apocalyptic number.

It is an amenable number.

1220855301 is a deficient number, since it is larger than the sum of its proper divisors (587819259).

1220855301 is an equidigital number, since it uses as much as digits as its factorization.

1220855301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45216872 (or 45216866 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1220855301 is about 34940.7398462025. The cubic root of 1220855301 is about 1068.7793752468.

The spelling of 1220855301 in words is "one billion, two hundred twenty million, eight hundred fifty-five thousand, three hundred one".