10212020222121 has 24 divisors (see below), whose sum is σ = 15259496316480. Its totient is φ = 6573187301856.

The previous prime is 10212020222111. The next prime is 10212020222123. The reversal of 10212020222121 is 12122202021201.

It is a happy number.

10212020222121 is a `hidden beast` number, since 10 + 212 + 0 + 202 + 221 + 21 = 666.

It is not a de Polignac number, because 10212020222121 - 2⁷ = 10212020221993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212020222094 and 10212020222103.

It is not an unprimeable number, because it can be changed into a prime (10212020222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44868010 + ... + 45095036.

It is an arithmetic number, because the mean of its divisors is an integer number (635812346520).

Almost surely, 2^{10212020222121} is an apocalyptic number.

It is an amenable number.

10212020222121 is a deficient number, since it is larger than the sum of its proper divisors (5047476094359).

10212020222121 is a wasteful number, since it uses less digits than its factorization.

10212020222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399405 (or 399402 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10212020222121 its reverse (12122202021201), we get a palindrome (22334222243322).

The spelling of 10212020222121 in words is "ten trillion, two hundred twelve billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".