211210200121122 has 64 divisors (see below), whose sum is σ = 480745081152000. Its totient is φ = 68712207382224.

The previous prime is 211210200121121. The next prime is 211210200121229. The reversal of 211210200121122 is 221121002012112.

211210200121122 is a `hidden beast` number, since 2 + 11 + 210 + 200 + 121 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211210200121095 and 211210200121104.

It is not an unprimeable number, because it can be changed into a prime (211210200121121) 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, 238021968 + ... + 238907675.

It is an arithmetic number, because the mean of its divisors is an integer number (7511641893000).

Almost surely, 2^{211210200121122} is an apocalyptic number.

211210200121122 is an abundant number, since it is smaller than the sum of its proper divisors (269534881030878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211210200121122 is a wasteful number, since it uses less digits than its factorization.

211210200121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476929852 (or 476929846 counting only the distinct ones).

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

Adding to 211210200121122 its reverse (221121002012112), we get a palindrome (432331202133234).

The spelling of 211210200121122 in words is "two hundred eleven trillion, two hundred ten billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-two".