210110212012221 has 96 divisors (see below), whose sum is σ = 335914239248640. Its totient is φ = 125877301051392.

The previous prime is 210110212012201. The next prime is 210110212012229. The reversal of 210110212012221 is 122210212011012.

210110212012221 is a `hidden beast` number, since 210 + 1 + 10 + 21 + 201 + 2 + 221 = 666.

It is not a de Polignac number, because 210110212012221 - 2¹³ = 210110212004029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210110212012194 and 210110212012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210110212012229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8693364225 + ... + 8693388393.

It is an arithmetic number, because the mean of its divisors is an integer number (3499106658840).

Almost surely, 2^{210110212012221} is an apocalyptic number.

It is an amenable number.

210110212012221 is a deficient number, since it is larger than the sum of its proper divisors (125804027236419).

210110212012221 is a wasteful number, since it uses less digits than its factorization.

210110212012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515 (or 28512 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210110212012221 its reverse (122210212011012), we get a palindrome (332320424023233).

The spelling of 210110212012221 in words is "two hundred ten trillion, one hundred ten billion, two hundred twelve million, twelve thousand, two hundred twenty-one".