1121122220201 has 16 divisors (see below), whose sum is σ = 1142931171648. Its totient is φ = 1099526400000.

The previous prime is 1121122220143. The next prime is 1121122220203. The reversal of 1121122220201 is 1020222211211.

It is a cyclic number.

It is not a de Polignac number, because 1121122220201 - 2³⁰ = 1120048478377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121122220201.

It is not an unprimeable number, because it can be changed into a prime (1121122220203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99640826 + ... + 99652076.

It is an arithmetic number, because the mean of its divisors is an integer number (71433198228).

Almost surely, 2^{1121122220201} is an apocalyptic number.

It is an amenable number.

1121122220201 is a deficient number, since it is larger than the sum of its proper divisors (21808951447).

1121122220201 is a wasteful number, since it uses less digits than its factorization.

1121122220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1121122220201 its reverse (1020222211211), we get a palindrome (2141344431412).

The spelling of 1121122220201 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred one".