211121020100210 has 24 divisors (see below), whose sum is σ = 417705555473388. Its totient is φ = 76771280036000.

The previous prime is 211121020100167. The next prime is 211121020100269. The reversal of 211121020100210 is 12001020121112.

It can be written as a sum of positive squares in 2 ways, for example, as 206101713075049 + 5019307025161 = 14356243^2 + 2240381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87240089741 + ... + 87240092160.

Almost surely, 2^{211121020100210} is an apocalyptic number.

211121020100210 is a deficient number, since it is larger than the sum of its proper divisors (206584535373178).

211121020100210 is a wasteful number, since it uses less digits than its factorization.

211121020100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174480181930 (or 174480181919 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211121020100210 its reverse (12001020121112), we get a palindrome (223122040221322).

The spelling of 211121020100210 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty million, one hundred thousand, two hundred ten".