211000210121 has 8 divisors (see below), whose sum is σ = 217813795584. Its totient is φ = 204187070160.

The previous prime is 211000210111. The next prime is 211000210177. The reversal of 211000210121 is 121012000112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211000210121 - 2²² = 210996015817 is a prime.

It is a super-2 number, since 2×211000210121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211000210111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040375 + ... + 1226531.

It is an arithmetic number, because the mean of its divisors is an integer number (27226724448).

Almost surely, 2^211000210121 is an apocalyptic number.

It is an amenable number.

211000210121 is a deficient number, since it is larger than the sum of its proper divisors (6813585463).

211000210121 is a wasteful number, since it uses less digits than its factorization.

211000210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222751.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211000210121 its reverse (121012000112), we get a palindrome (332012210233).

The spelling of 211000210121 in words is "two hundred eleven billion, two hundred ten thousand, one hundred twenty-one".