1121220201011 has 16 divisors (see below), whose sum is σ = 1190706386688. Its totient is φ = 1054043558400.

The previous prime is 1121220200983. The next prime is 1121220201019. The reversal of 1121220201011 is 1101020221211.

It is a cyclic number.

It is not a de Polignac number, because 1121220201011 - 2¹⁴ = 1121220184627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121220201019) 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 15 ways as a sum of consecutive naturals, for example, 1596896 + ... + 2189181.

It is an arithmetic number, because the mean of its divisors is an integer number (74419149168).

Almost surely, 2^{1121220201011} is an apocalyptic number.

1121220201011 is a deficient number, since it is larger than the sum of its proper divisors (69486185677).

1121220201011 is a wasteful number, since it uses less digits than its factorization.

1121220201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786382.

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

Adding to 1121220201011 its reverse (1101020221211), we get a palindrome (2222240422222).

It can be divided in two parts, 1121220 and 201011, that added together give a palindrome (1322231).

The spelling of 1121220201011 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, eleven".