10210121212221 has 48 divisors (see below), whose sum is σ = 17764984748160. Its totient is φ = 5526884039040.

The previous prime is 10210121212171. The next prime is 10210121212229. The reversal of 10210121212221 is 12221212101201.

10210121212221 is a `hidden beast` number, since 1 + 0 + 210 + 1 + 21 + 212 + 221 = 666.

10210121212221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10210121212221 - 2¹³ = 10210121204029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10210121212194 and 10210121212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10210121212229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52624515 + ... + 52818176.

It is an arithmetic number, because the mean of its divisors is an integer number (370103848920).

Almost surely, 2^{10210121212221} is an apocalyptic number.

It is an amenable number.

10210121212221 is a deficient number, since it is larger than the sum of its proper divisors (7554863535939).

10210121212221 is a wasteful number, since it uses less digits than its factorization.

10210121212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105442786 (or 105442783 counting only the distinct ones).

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

Adding to 10210121212221 its reverse (12221212101201), we get a palindrome (22431333313422).

The spelling of 10210121212221 in words is "ten trillion, two hundred ten billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-one".