1220120210201 has 4 divisors (see below), whose sum is σ = 1220171112804. Its totient is φ = 1220069307600.

The previous prime is 1220120210143. The next prime is 1220120210219. The reversal of 1220120210201 is 1020120210221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 288045816601 + 932074393600 = 536699^2 + 965440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220120210201 - 2³⁰ = 1219046468377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220120210261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25415330 + ... + 25463291.

It is an arithmetic number, because the mean of its divisors is an integer number (305042778201).

Almost surely, 2^{1220120210201} is an apocalyptic number.

It is an amenable number.

1220120210201 is a deficient number, since it is larger than the sum of its proper divisors (50902603).

1220120210201 is an equidigital number, since it uses as much as digits as its factorization.

1220120210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50902602.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1220120210201 its reverse (1020120210221), we get a palindrome (2240240420422).

The spelling of 1220120210201 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred ten thousand, two hundred one".