1000011220201 has 10 divisors (see below), whose sum is σ = 1166610343402. Its totient is φ = 857152472400.

The previous prime is 1000011220163. The next prime is 1000011220211. The reversal of 1000011220201 is 1020221100001.

It can be written as a sum of positive squares in only one way, i.e., 823875720976 + 176135499225 = 907676^2 + 419685^2 .

It is not a de Polignac number, because 1000011220201 - 2⁷ = 1000011220073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000011220211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 208246500 + ... + 208251301.

Almost surely, 2^{1000011220201} is an apocalyptic number.

It is an amenable number.

1000011220201 is a deficient number, since it is larger than the sum of its proper divisors (166599123201).

1000011220201 is an frugal number, since it uses more digits than its factorization.

1000011220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416497829 (or 416497808 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1000011220201 its reverse (1020221100001), we get a palindrome (2020232320202).

The spelling of 1000011220201 in words is "one trillion, eleven million, two hundred twenty thousand, two hundred one".