2110011121221 has 32 divisors (see below), whose sum is σ = 2877545668608. Its totient is φ = 1374667547520.

The previous prime is 2110011121213. The next prime is 2110011121243. The reversal of 2110011121221 is 1221211100112.

It is a happy number.

It is not a de Polignac number, because 2110011121221 - 2³ = 2110011121213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2110011121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110011120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302160496 + ... + 302167478.

It is an arithmetic number, because the mean of its divisors is an integer number (89923302144).

Almost surely, 2^{2110011121221} is an apocalyptic number.

It is an amenable number.

2110011121221 is a deficient number, since it is larger than the sum of its proper divisors (767534547387).

2110011121221 is a wasteful number, since it uses less digits than its factorization.

2110011121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2110011121221 its reverse (1221211100112), we get a palindrome (3331222221333).

The spelling of 2110011121221 in words is "two trillion, one hundred ten billion, eleven million, one hundred twenty-one thousand, two hundred twenty-one".