1011211202201 has 4 divisors (see below), whose sum is σ = 1021223194404. Its totient is φ = 1001199210000.

The previous prime is 1011211202191. The next prime is 1011211202257. The reversal of 1011211202201 is 1022021121101.

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 820328718400 + 190882483801 = 905720^2 + 436901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011211202201 - 2¹⁸ = 1011210940057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011211202101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005995950 + ... + 5005996151.

It is an arithmetic number, because the mean of its divisors is an integer number (255305798601).

Almost surely, 2^{1011211202201} is an apocalyptic number.

It is an amenable number.

1011211202201 is a deficient number, since it is larger than the sum of its proper divisors (10011992203).

1011211202201 is a wasteful number, since it uses less digits than its factorization.

1011211202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011992202.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011211202201 its reverse (1022021121101), we get a palindrome (2033232323302).

The spelling of 1011211202201 in words is "one trillion, eleven billion, two hundred eleven million, two hundred two thousand, two hundred one".