2102122021211 has 8 divisors (see below), whose sum is σ = 2197399910400.
Its totient is φ = 2008560850920.
The previous prime is 2102122021199. The next prime is 2102122021229. The reversal of 2102122021211 is 1121202212012.
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 2102122021211 - 230 = 2101048279387 is a prime.
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 2102122021211.
It is not an unprimeable number, because it can be changed into a prime (2102122021711) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429177221 + ... + 429182118.
It is an arithmetic number, because the mean of its divisors is an integer number (274674988800).
Almost surely, 22102122021211 is an apocalyptic number.
2102122021211 is a deficient number, since it is larger than the sum of its proper divisors (95277889189).
2102122021211 is an equidigital number, since it uses as much as digits as its factorization.
2102122021211 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 858359449.
The product of its (nonzero) digits is 64, while the sum is 17.
Adding to 2102122021211 its reverse (1121202212012), we get a palindrome (3223324233223).
The spelling of 2102122021211 in words is "two trillion, one hundred two billion, one hundred twenty-two million, twenty-one thousand, two hundred eleven".