1220551106 has 16 divisors (see below), whose sum is σ = 1856442240. Its totient is φ = 601757520.

The previous prime is 1220551103. The next prime is 1220551121. The reversal of 1220551106 is 6011550221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1220551103) 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, 125996 + ... + 135336.

It is an arithmetic number, because the mean of its divisors is an integer number (116027640).

Almost surely, 2^1220551106 is an apocalyptic number.

1220551106 is a deficient number, since it is larger than the sum of its proper divisors (635891134).

1220551106 is an equidigital number, since it uses as much as digits as its factorization.

1220551106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10249.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1220551106 is about 34936.3865618641. The cubic root of 1220551106 is about 1068.6906002303.

The spelling of 1220551106 in words is "one billion, two hundred twenty million, five hundred fifty-one thousand, one hundred six".