1011202220201 has 4 divisors (see below), whose sum is σ = 1020479304900. Its totient is φ = 1001925135504.

The previous prime is 1011202220159. The next prime is 1011202220209. The reversal of 1011202220201 is 1020222021101.

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 263148480400 + 748053739801 = 512980^2 + 864901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011202220201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011202220209) 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, 4638542186 + ... + 4638542403.

It is an arithmetic number, because the mean of its divisors is an integer number (255119826225).

Almost surely, 2^{1011202220201} is an apocalyptic number.

It is an amenable number.

1011202220201 is a deficient number, since it is larger than the sum of its proper divisors (9277084699).

1011202220201 is an equidigital number, since it uses as much as digits as its factorization.

1011202220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277084698.

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

Adding to 1011202220201 its reverse (1020222021101), we get a palindrome (2031424241302).

It can be divided in two parts, 10 and 11202220201, that added together give a palindrome (11202220211).

The spelling of 1011202220201 in words is "one trillion, eleven billion, two hundred two million, two hundred twenty thousand, two hundred one".