210121100211 has 8 divisors (see below), whose sum is σ = 305630691264. Its totient is φ = 127346121320.

The previous prime is 210121100209. The next prime is 210121100221. The reversal of 210121100211 is 112001121012.

210121100211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 210121100211 - 2¹ = 210121100209 is a prime.

It is a super-2 number, since 2×210121100211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210121100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3183653001 + ... + 3183653066.

It is an arithmetic number, because the mean of its divisors is an integer number (38203836408).

Almost surely, 2^210121100211 is an apocalyptic number.

210121100211 is a deficient number, since it is larger than the sum of its proper divisors (95509591053).

210121100211 is a wasteful number, since it uses less digits than its factorization.

210121100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367306081.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210121100211 its reverse (112001121012), we get a palindrome (322122221223).

The spelling of 210121100211 in words is "two hundred ten billion, one hundred twenty-one million, one hundred thousand, two hundred eleven".