2011001121221 has 8 divisors (see below), whose sum is σ = 2080565740800. Its totient is φ = 1941451151920.

The previous prime is 2011001121209. The next prime is 2011001121229. The reversal of 2011001121221 is 1221211001102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011001121221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011001121196 and 2011001121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011001121229) 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 7 ways as a sum of consecutive naturals, for example, 3382925 + ... + 3932706.

It is an arithmetic number, because the mean of its divisors is an integer number (260070717600).

Almost surely, 2^{2011001121221} is an apocalyptic number.

It is an amenable number.

2011001121221 is a deficient number, since it is larger than the sum of its proper divisors (69564619579).

2011001121221 is an equidigital number, since it uses as much as digits as its factorization.

2011001121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325139.

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

Adding to 2011001121221 its reverse (1221211001102), we get a palindrome (3232212122323).

The spelling of 2011001121221 in words is "two trillion, eleven billion, one million, one hundred twenty-one thousand, two hundred twenty-one".