1220000000001 has 32 divisors (see below), whose sum is σ = 1726523382528. Its totient is φ = 765217474560.

The previous prime is 1219999999973. The next prime is 1220000000017. The reversal of 1220000000001 is 1000000000221.

It is a happy number.

It is not a de Polignac number, because 1220000000001 - 2¹⁴ = 1219999983617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220000000071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671901 + ... + 1700426.

It is an arithmetic number, because the mean of its divisors is an integer number (53953855704).

Almost surely, 2^{1220000000001} is an apocalyptic number.

It is an amenable number.

1220000000001 is a deficient number, since it is larger than the sum of its proper divisors (506523382527).

1220000000001 is a wasteful number, since it uses less digits than its factorization.

1220000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372521.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 1220000000001 its reverse (1000000000221), we get a palindrome (2220000000222).

The spelling of 1220000000001 in words is "one trillion, two hundred twenty billion, one", and thus it is an aban number.