1121102021201 has 4 divisors (see below), whose sum is σ = 1121125743972. Its totient is φ = 1121078298432.

The previous prime is 1121102021191. The next prime is 1121102021209. The reversal of 1121102021201 is 1021202011211.

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 650950444225 + 470151576976 = 806815^2 + 685676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121102021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121102021209) 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, 11790356 + ... + 11885061.

It is an arithmetic number, because the mean of its divisors is an integer number (280281435993).

Almost surely, 2^{1121102021201} is an apocalyptic number.

It is an amenable number.

1121102021201 is a deficient number, since it is larger than the sum of its proper divisors (23722771).

1121102021201 is an equidigital number, since it uses as much as digits as its factorization.

1121102021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23722770.

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

Adding to 1121102021201 its reverse (1021202011211), we get a palindrome (2142304032412).

The spelling of 1121102021201 in words is "one trillion, one hundred twenty-one billion, one hundred two million, twenty-one thousand, two hundred one".