2111100201221 has 48 divisors (see below), whose sum is σ = 2430818417664. Its totient is φ = 1829786112000.

The previous prime is 2111100201181. The next prime is 2111100201241. The reversal of 2111100201221 is 1221020011112.

It is not a de Polignac number, because 2111100201221 - 2¹⁸ = 2111099939077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111100201196 and 2111100201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111100201241) 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 47 ways as a sum of consecutive naturals, for example, 610672325 + ... + 610675781.

It is an arithmetic number, because the mean of its divisors is an integer number (50642050368).

Almost surely, 2^{2111100201221} is an apocalyptic number.

It is an amenable number.

2111100201221 is a deficient number, since it is larger than the sum of its proper divisors (319718216443).

2111100201221 is a wasteful number, since it uses less digits than its factorization.

2111100201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874 (or 5863 counting only the distinct ones).

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

Adding to 2111100201221 its reverse (1221020011112), we get a palindrome (3332120212333).

The spelling of 2111100201221 in words is "two trillion, one hundred eleven billion, one hundred million, two hundred one thousand, two hundred twenty-one".