1220000020201 has 6 divisors (see below), whose sum is σ = 1287590049402. Its totient is φ = 1155789492480.

The previous prime is 1220000020159. The next prime is 1220000020339. The reversal of 1220000020201 is 1020200000221.

It can be written as a sum of positive squares in only one way, i.e., 842905773801 + 377094246400 = 918099^2 + 614080^2 .

It is not a de Polignac number, because 1220000020201 - 2³³ = 1211410085609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220000020901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1689750360 + ... + 1689751081.

It is an arithmetic number, because the mean of its divisors is an integer number (214598341567).

Almost surely, 2^{1220000020201} is an apocalyptic number.

It is an amenable number.

1220000020201 is a deficient number, since it is larger than the sum of its proper divisors (67590029201).

1220000020201 is an equidigital number, since it uses as much as digits as its factorization.

1220000020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379501479 (or 3379501460 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1220000020201 its reverse (1020200000221), we get a palindrome (2240200020422).

It can be divided in two parts, 1220000020 and 201, that added together give a palindrome (1220000221).

The spelling of 1220000020201 in words is "one trillion, two hundred twenty billion, twenty thousand, two hundred one".