211002222200121 has 16 divisors (see below), whose sum is σ = 341013692445120. Its totient is φ = 127880134666560.

The previous prime is 211002222200113. The next prime is 211002222200123. The reversal of 211002222200121 is 121002222200112.

It is a happy number.

211002222200121 is a `hidden beast` number, since 2 + 1 + 100 + 222 + 220 + 0 + 121 = 666.

211002222200121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211002222200121 - 2³ = 211002222200113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211002222200094 and 211002222200103.

It is not an unprimeable number, because it can be changed into a prime (211002222200123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355222596000 + ... + 355222596593.

It is an arithmetic number, because the mean of its divisors is an integer number (21313355777820).

Almost surely, 2^{211002222200121} is an apocalyptic number.

It is an amenable number.

211002222200121 is a deficient number, since it is larger than the sum of its proper divisors (130011470244999).

211002222200121 is a wasteful number, since it uses less digits than its factorization.

211002222200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710445192613 (or 710445192607 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211002222200121 its reverse (121002222200112), we get a palindrome (332004444400233).

Subtracting from 211002222200121 its reverse (121002222200112), we obtain a palindrome (90000000000009).

The spelling of 211002222200121 in words is "two hundred eleven trillion, two billion, two hundred twenty-two million, two hundred thousand, one hundred twenty-one".