2011220001121 has 4 divisors (see below), whose sum is σ = 2011246561044. Its totient is φ = 2011193441200.

The previous prime is 2011220001101. The next prime is 2011220001179. The reversal of 2011220001121 is 1211000221102.

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 1886678062096 + 124541939025 = 1373564^2 + 352905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011220001121 - 2²¹ = 2011217903969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011220001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13166050 + ... + 13317931.

It is an arithmetic number, because the mean of its divisors is an integer number (502811640261).

Almost surely, 2^{2011220001121} is an apocalyptic number.

It is an amenable number.

2011220001121 is a deficient number, since it is larger than the sum of its proper divisors (26559923).

2011220001121 is an equidigital number, since it uses as much as digits as its factorization.

2011220001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26559922.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2011220001121 its reverse (1211000221102), we get a palindrome (3222220222223).

The spelling of 2011220001121 in words is "two trillion, eleven billion, two hundred twenty million, one thousand, one hundred twenty-one".