1220220000101 has 4 divisors (see below), whose sum is σ = 1220309650092. Its totient is φ = 1220130350112.

The previous prime is 1220220000089. The next prime is 1220220000113. The reversal of 1220220000101 is 1010000220221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1220220000089) and next prime (1220220000113).

It can be written as a sum of positive squares in 2 ways, for example, as 111886905025 + 1108333095076 = 334495^2 + 1052774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220220000101 - 2¹⁰ = 1220219999077 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 (1220220000191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44804576 + ... + 44831801.

It is an arithmetic number, because the mean of its divisors is an integer number (305077412523).

Almost surely, 2^{1220220000101} is an apocalyptic number.

It is an amenable number.

1220220000101 is a deficient number, since it is larger than the sum of its proper divisors (89649991).

1220220000101 is an equidigital number, since it uses as much as digits as its factorization.

1220220000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89649990.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220220000101 its reverse (1010000220221), we get a palindrome (2230220220322).

The spelling of 1220220000101 in words is "one trillion, two hundred twenty billion, two hundred twenty million, one hundred one", and thus it is an aban number.