1220127213 has 8 divisors (see below), whose sum is σ = 1722532608. Its totient is φ = 765569984.

The previous prime is 1220127211. The next prime is 1220127229. The reversal of 1220127213 is 3127210221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220127213 - 2¹ = 1220127211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220127213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220127211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11961981 + ... + 11962082.

It is an arithmetic number, because the mean of its divisors is an integer number (215316576).

Almost surely, 2^1220127213 is an apocalyptic number.

It is an amenable number.

1220127213 is a deficient number, since it is larger than the sum of its proper divisors (502405395).

1220127213 is a wasteful number, since it uses less digits than its factorization.

1220127213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23924083.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1220127213 is about 34930.3193944745. The cubic root of 1220127213 is about 1068.5668684407.

Adding to 1220127213 its reverse (3127210221), we get a palindrome (4347337434).

The spelling of 1220127213 in words is "one billion, two hundred twenty million, one hundred twenty-seven thousand, two hundred thirteen".