211200010220121 has 32 divisors (see below), whose sum is σ = 306918768815232. Its totient is φ = 128401894241280.

The previous prime is 211200010220113. The next prime is 211200010220279. The reversal of 211200010220121 is 121022010002112.

It is not a de Polignac number, because 211200010220121 - 2³ = 211200010220113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211200010220121.

It is not an unprimeable number, because it can be changed into a prime (211200010290121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 333395601 + ... + 334028481.

It is an arithmetic number, because the mean of its divisors is an integer number (9591211525476).

Almost surely, 2^{211200010220121} is an apocalyptic number.

It is an amenable number.

211200010220121 is a deficient number, since it is larger than the sum of its proper divisors (95718758595111).

211200010220121 is a wasteful number, since it uses less digits than its factorization.

211200010220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736073.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211200010220121 its reverse (121022010002112), we get a palindrome (332222020222233).

The spelling of 211200010220121 in words is "two hundred eleven trillion, two hundred billion, ten million, two hundred twenty thousand, one hundred twenty-one".