211210220102121 has 32 divisors (see below), whose sum is σ = 319985183808000. Its totient is φ = 137646959529744.

The previous prime is 211210220102113. The next prime is 211210220102227. The reversal of 211210220102121 is 121201022012112.

211210220102121 is a `hidden beast` number, since 2 + 11 + 210 + 220 + 10 + 212 + 1 = 666.

It is not a de Polignac number, because 211210220102121 - 2³ = 211210220102113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211210220102094 and 211210220102103.

It is not an unprimeable number, because it can be changed into a prime (211210220102111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370068075 + ... + 370638368.

It is an arithmetic number, because the mean of its divisors is an integer number (9999536994000).

Almost surely, 2^{211210220102121} is an apocalyptic number.

It is an amenable number.

211210220102121 is a deficient number, since it is larger than the sum of its proper divisors (108774963705879).

211210220102121 is a wasteful number, since it uses less digits than its factorization.

211210220102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740706690 (or 740706684 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211210220102121 its reverse (121201022012112), we get a palindrome (332411242114233).

The spelling of 211210220102121 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twenty million, one hundred two thousand, one hundred twenty-one".