1220102100009 has 20 divisors (see below), whose sum is σ = 1962823323076. Its totient is φ = 750832060896.

The previous prime is 1220102099999. The next prime is 1220102100011. The reversal of 1220102100009 is 9000012010221.

It can be written as a sum of positive squares in 2 ways, for example, as 64950051609 + 1155152048400 = 254853^2 + 1074780^2 .

It is not a de Polignac number, because 1220102100009 - 2⁵ = 1220102099977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220102099964 and 1220102100000.

It is not an unprimeable number, because it can be changed into a prime (1220102100109) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 579344674 + ... + 579346779.

Almost surely, 2^{1220102100009} is an apocalyptic number.

It is an amenable number.

1220102100009 is a deficient number, since it is larger than the sum of its proper divisors (742721223067).

1220102100009 is a wasteful number, since it uses less digits than its factorization.

1220102100009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158691478 (or 1158691469 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 1220102100009 in words is "one trillion, two hundred twenty billion, one hundred two million, one hundred thousand, nine".