2210355021 has 8 divisors (see below), whose sum is σ = 3368160064. Its totient is φ = 1263060000.

The previous prime is 2210354969. The next prime is 2210355023. The reversal of 2210355021 is 1205530122.

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

It is not a de Polignac number, because 2210355021 - 2⁷ = 2210354893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 105255001 = 2210355021 / (2 + 2 + 1 + 0 + 3 + 5 + 5 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210355023) 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, 52627480 + ... + 52627521.

It is an arithmetic number, because the mean of its divisors is an integer number (421020008).

Almost surely, 2^2210355021 is an apocalyptic number.

2210355021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2210355021 is a deficient number, since it is larger than the sum of its proper divisors (1157805043).

2210355021 is a wasteful number, since it uses less digits than its factorization.

2210355021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105255011.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2210355021 is about 47014.4129071075. The cubic root of 2210355021 is about 1302.6288069805.

Adding to 2210355021 its reverse (1205530122), we get a palindrome (3415885143).

The spelling of 2210355021 in words is "two billion, two hundred ten million, three hundred fifty-five thousand, twenty-one".