2111010221 has 4 divisors (see below), whose sum is σ = 2112420000. Its totient is φ = 2109600444.

The previous prime is 2111010197. The next prime is 2111010233. The reversal of 2111010221 is 1220101112.

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 2111010221 - 2⁶ = 2111010157 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 (2111010721) 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, 702641 + ... + 705638.

It is an arithmetic number, because the mean of its divisors is an integer number (528105000).

Almost surely, 2^2111010221 is an apocalyptic number.

It is an amenable number.

2111010221 is a deficient number, since it is larger than the sum of its proper divisors (1409779).

2111010221 is a wasteful number, since it uses less digits than its factorization.

2111010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409778.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2111010221 is about 45945.7312598243. The cubic root of 2111010221 is about 1282.8132745365.

Adding to 2111010221 its reverse (1220101112), we get a palindrome (3331111333).

The spelling of 2111010221 in words is "two billion, one hundred eleven million, ten thousand, two hundred twenty-one".