211210020210121 has 16 divisors (see below), whose sum is σ = 221812073164800. Its totient is φ = 200847691328400.

The previous prime is 211210020210109. The next prime is 211210020210131. The reversal of 211210020210121 is 121012020012112.

It is a cyclic number.

It is not a de Polignac number, because 211210020210121 - 2²⁹ = 211209483339209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211210020210095 and 211210020210104.

It is not an unprimeable number, because it can be changed into a prime (211210020210131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20015701 + ... + 28688818.

It is an arithmetic number, because the mean of its divisors is an integer number (13863254572800).

Almost surely, 2^{211210020210121} is an apocalyptic number.

It is an amenable number.

211210020210121 is a deficient number, since it is larger than the sum of its proper divisors (10602052954679).

211210020210121 is a wasteful number, since it uses less digits than its factorization.

211210020210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48706980.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211210020210121 its reverse (121012020012112), we get a palindrome (332222040222233).

The spelling of 211210020210121 in words is "two hundred eleven trillion, two hundred ten billion, twenty million, two hundred ten thousand, one hundred twenty-one".