2011101021221 has 8 divisors (see below), whose sum is σ = 2078535045888. Its totient is φ = 1943826984000.

The previous prime is 2011101021217. The next prime is 2011101021253. The reversal of 2011101021221 is 1221201011102.

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 2011101021221 - 2² = 2011101021217 is a prime.

It is a super-2 number, since 2×2011101021221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011101021196 and 2011101021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011101021121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39971300 + ... + 40021581.

It is an arithmetic number, because the mean of its divisors is an integer number (259816880736).

Almost surely, 2^{2011101021221} is an apocalyptic number.

It is an amenable number.

2011101021221 is a deficient number, since it is larger than the sum of its proper divisors (67434024667).

2011101021221 is an equidigital number, since it uses as much as digits as its factorization.

2011101021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79993723.

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

Adding to 2011101021221 its reverse (1221201011102), we get a palindrome (3232302032323).

The spelling of 2011101021221 in words is "two trillion, eleven billion, one hundred one million, twenty-one thousand, two hundred twenty-one".