2011101001221 has 32 divisors (see below), whose sum is σ = 2924946984960. Its totient is φ = 1221659584704.

The previous prime is 2011101001199. The next prime is 2011101001243. The reversal of 2011101001221 is 1221001011102.

It is an interprime number because it is at equal distance from previous prime (2011101001199) and next prime (2011101001243).

It is not a de Polignac number, because 2011101001221 - 2⁶ = 2011101001157 is a prime.

It is a super-2 number, since 2×2011101001221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011101001197 and 2011101001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011101001271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14049010 + ... + 14191436.

It is an arithmetic number, because the mean of its divisors is an integer number (91404593280).

Almost surely, 2^{2011101001221} is an apocalyptic number.

It is an amenable number.

2011101001221 is a deficient number, since it is larger than the sum of its proper divisors (913845983739).

2011101001221 is a wasteful number, since it uses less digits than its factorization.

2011101001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147105.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2011101001221 its reverse (1221001011102), we get a palindrome (3232102012323).

The spelling of 2011101001221 in words is "two trillion, eleven billion, one hundred one million, one thousand, two hundred twenty-one".