1220120011201 has 32 divisors (see below), whose sum is σ = 1518999955200. Its totient is φ = 954245698560.

The previous prime is 1220120011193. The next prime is 1220120011207. The reversal of 1220120011201 is 1021100210221.

It is not a de Polignac number, because 1220120011201 - 2³ = 1220120011193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1220120011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30505146 + ... + 30545116.

It is an arithmetic number, because the mean of its divisors is an integer number (47468748600).

Almost surely, 2^{1220120011201} is an apocalyptic number.

It is an amenable number.

1220120011201 is a deficient number, since it is larger than the sum of its proper divisors (298879943999).

1220120011201 is a wasteful number, since it uses less digits than its factorization.

1220120011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43849.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220120011201 its reverse (1021100210221), we get a palindrome (2241220221422).

The spelling of 1220120011201 in words is "one trillion, two hundred twenty billion, one hundred twenty million, eleven thousand, two hundred one".