2021102210 has 8 divisors (see below), whose sum is σ = 3637983996. Its totient is φ = 808440880.

The previous prime is 2021102201. The next prime is 2021102221. The reversal of 2021102210 is 122011202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1901221609 + 119880601 = 43603^2 + 10949^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2021102191 and 2021102200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101055101 + ... + 101055120.

Almost surely, 2^2021102210 is an apocalyptic number.

2021102210 is a deficient number, since it is larger than the sum of its proper divisors (1616881786).

2021102210 is a wasteful number, since it uses less digits than its factorization.

2021102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202110228.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2021102210 is about 44956.6703615826. The cubic root of 2021102210 is about 1264.3367424020.

Adding to 2021102210 its reverse (122011202), we get a palindrome (2143113412).

The spelling of 2021102210 in words is "two billion, twenty-one million, one hundred two thousand, two hundred ten".