210202244124121 has 4 divisors (see below), whose sum is σ = 216982961676544. Its totient is φ = 203421526571700.

The previous prime is 210202244124113. The next prime is 210202244124167. The reversal of 210202244124121 is 121421442202012.

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 210202244124121 - 2³ = 210202244124113 is a prime.

It is a super-2 number, since 2×210202244124121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210202244124121.

It is not an unprimeable number, because it can be changed into a prime (210202244424121) 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, 3390358776165 + ... + 3390358776226.

It is an arithmetic number, because the mean of its divisors is an integer number (54245740419136).

Almost surely, 2^{210202244124121} is an apocalyptic number.

It is an amenable number.

210202244124121 is a deficient number, since it is larger than the sum of its proper divisors (6780717552423).

210202244124121 is an equidigital number, since it uses as much as digits as its factorization.

210202244124121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780717552422.

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 210202244124121 its reverse (121421442202012), we get a palindrome (331623686326133).

The spelling of 210202244124121 in words is "two hundred ten trillion, two hundred two billion, two hundred forty-four million, one hundred twenty-four thousand, one hundred twenty-one".