211121210200122 has 16 divisors (see below), whose sum is σ = 469158244889280. Its totient is φ = 70373736733356.

The previous prime is 211121210200099. The next prime is 211121210200123. The reversal of 211121210200122 is 221002012121112.

211121210200122 is a `hidden beast` number, since 2 + 11 + 121 + 210 + 200 + 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 = 211121210200095 and 211121210200104.

It is not an unprimeable number, because it can be changed into a prime (211121210200123) 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, 1954826020318 + ... + 1954826020425.

It is an arithmetic number, because the mean of its divisors is an integer number (29322390305580).

Almost surely, 2^{211121210200122} is an apocalyptic number.

211121210200122 is an abundant number, since it is smaller than the sum of its proper divisors (258037034689158).

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

211121210200122 is a wasteful number, since it uses less digits than its factorization.

211121210200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909652040754 (or 3909652040748 counting only the distinct ones).

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

Adding to 211121210200122 its reverse (221002012121112), we get a palindrome (432123222321234).

The spelling of 211121210200122 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred ten million, two hundred thousand, one hundred twenty-two".