1220012101 has 8 divisors (see below), whose sum is σ = 1521054144. Its totient is φ = 950658720.

The previous prime is 1220012093. The next prime is 1220012119. The reversal of 1220012101 is 1012100221.

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

It is not a de Polignac number, because 1220012101 - 2³ = 1220012093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220013101) 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, 7922080 + ... + 7922233.

It is an arithmetic number, because the mean of its divisors is an integer number (190131768).

Almost surely, 2^1220012101 is an apocalyptic number.

1220012101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220012101 is a deficient number, since it is larger than the sum of its proper divisors (301042043).

1220012101 is a wasteful number, since it uses less digits than its factorization.

1220012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15844331.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220012101 is about 34928.6716180275. The cubic root of 1220012101 is about 1068.5332630001.

Adding to 1220012101 its reverse (1012100221), we get a palindrome (2232112322).

The spelling of 1220012101 in words is "one billion, two hundred twenty million, twelve thousand, one hundred one".