1220206047 has 8 divisors (see below), whose sum is σ = 1627559856. Its totient is φ = 813161472.

The previous prime is 1220206033. The next prime is 1220206063. The reversal of 1220206047 is 7406020221.

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

It is not a de Polignac number, because 1220206047 - 2¹⁶ = 1220140511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220206447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67938 + ... + 83999.

It is an arithmetic number, because the mean of its divisors is an integer number (203444982).

Almost surely, 2^1220206047 is an apocalyptic number.

1220206047 is a deficient number, since it is larger than the sum of its proper divisors (407353809).

1220206047 is a wasteful number, since it uses less digits than its factorization.

1220206047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154617.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1220206047 is about 34931.4478228430. The cubic root of 1220206047 is about 1068.5898817750.

Adding to 1220206047 its reverse (7406020221), we get a palindrome (8626226268).

The spelling of 1220206047 in words is "one billion, two hundred twenty million, two hundred six thousand, forty-seven".