2113222021 has 8 divisors (see below), whose sum is σ = 2118836160. Its totient is φ = 2107616928.

The previous prime is 2113221983. The next prime is 2113222049. The reversal of 2113222021 is 1202223112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2113222021 - 2²³ = 2104833413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113221986 and 2113222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113222121) 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 7 ways as a sum of consecutive naturals, for example, 759585 + ... + 762361.

It is an arithmetic number, because the mean of its divisors is an integer number (264854520).

Almost surely, 2^2113222021 is an apocalyptic number.

It is an amenable number.

2113222021 is a deficient number, since it is larger than the sum of its proper divisors (5614139).

2113222021 is an equidigital number, since it uses as much as digits as its factorization.

2113222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2113222021 is about 45969.7946591020. The cubic root of 2113222021 is about 1283.2611384735.

Adding to 2113222021 its reverse (1202223112), we get a palindrome (3315445133).

The spelling of 2113222021 in words is "two billion, one hundred thirteen million, two hundred twenty-two thousand, twenty-one".