211100121020210 has 8 divisors (see below), whose sum is σ = 379980217836396. Its totient is φ = 84440048408080.

The previous prime is 211100121020207. The next prime is 211100121020213. The reversal of 211100121020210 is 12020121001112.

It is an interprime number because it is at equal distance from previous prime (211100121020207) and next prime (211100121020213).

It can be written as a sum of positive squares in 2 ways, for example, as 180979200028201 + 30120920992009 = 13452851^2 + 5488253^2 .

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

It is a super-2 number, since 2×211100121020210² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211100121020213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10555006051001 + ... + 10555006051020.

Almost surely, 2^{211100121020210} is an apocalyptic number.

211100121020210 is a deficient number, since it is larger than the sum of its proper divisors (168880096816186).

211100121020210 is a wasteful number, since it uses less digits than its factorization.

211100121020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21110012102028.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211100121020210 its reverse (12020121001112), we get a palindrome (223120242021322).

The spelling of 211100121020210 in words is "two hundred eleven trillion, one hundred billion, one hundred twenty-one million, twenty thousand, two hundred ten".