210220212012021 has 16 divisors (see below), whose sum is σ = 311653777420800. Its totient is φ = 140049416176704.

The previous prime is 210220212011993. The next prime is 210220212012037. The reversal of 210220212012021 is 120210212022012.

It is a happy number.

210220212012021 is a `hidden beast` number, since 21 + 0 + 220 + 21 + 201 + 202 + 1 = 666.

It is not a de Polignac number, because 210220212012021 - 2²⁶ = 210220144903157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210220212011985 and 210220212012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220212012721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2705289076 + ... + 2705366781.

It is an arithmetic number, because the mean of its divisors is an integer number (19478361088800).

Almost surely, 2^{210220212012021} is an apocalyptic number.

It is an amenable number.

210220212012021 is a deficient number, since it is larger than the sum of its proper divisors (101433565408779).

210220212012021 is a wasteful number, since it uses less digits than its factorization.

210220212012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410657305 (or 5410657299 counting only the distinct ones).

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

Adding to 210220212012021 its reverse (120210212022012), we get a palindrome (330430424034033).

Subtracting from 210220212012021 its reverse (120210212022012), we obtain a palindrome (90009999990009).

The spelling of 210220212012021 in words is "two hundred ten trillion, two hundred twenty billion, two hundred twelve million, twelve thousand, twenty-one".