1220101100201 has 12 divisors (see below), whose sum is σ = 1363443602292. Its totient is φ = 1087891997184.

The previous prime is 1220101100191. The next prime is 1220101100227. The reversal of 1220101100201 is 1020011010221.

It can be written as a sum of positive squares in 2 ways, for example, as 1135980798976 + 84120301225 = 1065824^2 + 290035^2 .

It is not a de Polignac number, because 1220101100201 - 2¹⁸ = 1220100838057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220101100291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99399200 + ... + 99411473.

It is an arithmetic number, because the mean of its divisors is an integer number (113620300191).

Almost surely, 2^{1220101100201} is an apocalyptic number.

It is an amenable number.

1220101100201 is a deficient number, since it is larger than the sum of its proper divisors (143342502091).

1220101100201 is a wasteful number, since it uses less digits than its factorization.

1220101100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198810728 (or 198810709 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1220101100201 its reverse (1020011010221), we get a palindrome (2240112110422).

The spelling of 1220101100201 in words is "one trillion, two hundred twenty billion, one hundred one million, one hundred thousand, two hundred one".