2011221010121 has 8 divisors (see below), whose sum is σ = 2039856902400. Its totient is φ = 1982664552960.

The previous prime is 2011221010039. The next prime is 2011221010207. The reversal of 2011221010121 is 1210101221102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011221010121 - 2¹⁴ = 2011220993737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011221010096 and 2011221010105.

It is not an unprimeable number, because it can be changed into a prime (2011221016121) 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, 19807781 + ... + 19909058.

It is an arithmetic number, because the mean of its divisors is an integer number (254982112800).

Almost surely, 2^{2011221010121} is an apocalyptic number.

It is an amenable number.

2011221010121 is a deficient number, since it is larger than the sum of its proper divisors (28635892279).

2011221010121 is an equidigital number, since it uses as much as digits as its factorization.

2011221010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39717559.

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

Adding to 2011221010121 its reverse (1210101221102), we get a palindrome (3221322231223).

The spelling of 2011221010121 in words is "two trillion, eleven billion, two hundred twenty-one million, ten thousand, one hundred twenty-one".