2110021100221 has 4 divisors (see below), whose sum is σ = 2111055933600. Its totient is φ = 2108986266844.

The previous prime is 2110021100197. The next prime is 2110021100237. The reversal of 2110021100221 is 1220011200112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2110021100221 - 2¹⁷ = 2110020969149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110021103221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517413631 + ... + 517417708.

It is an arithmetic number, because the mean of its divisors is an integer number (527763983400).

Almost surely, 2^{2110021100221} is an apocalyptic number.

It is an amenable number.

2110021100221 is a deficient number, since it is larger than the sum of its proper divisors (1034833379).

2110021100221 is a wasteful number, since it uses less digits than its factorization.

2110021100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034833378.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2110021100221 its reverse (1220011200112), we get a palindrome (3330032300333).

The spelling of 2110021100221 in words is "two trillion, one hundred ten billion, twenty-one million, one hundred thousand, two hundred twenty-one".