212020002202221 has 12 divisors (see below), whose sum is σ = 312767095447872. Its totient is φ = 138339292216776.

The previous prime is 212020002202109. The next prime is 212020002202331. The reversal of 212020002202221 is 122202200020212.

212020002202221 is a `hidden beast` number, since 2 + 1 + 20 + 200 + 0 + 220 + 2 + 221 = 666.

It is not a de Polignac number, because 212020002202221 - 2⁷ = 212020002202093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212020002202194 and 212020002202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020002202721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250614659391 + ... + 250614660236.

It is an arithmetic number, because the mean of its divisors is an integer number (26063924620656).

Almost surely, 2^{212020002202221} is an apocalyptic number.

It is an amenable number.

212020002202221 is a deficient number, since it is larger than the sum of its proper divisors (100747093245651).

212020002202221 is a wasteful number, since it uses less digits than its factorization.

212020002202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501229319680 (or 501229319677 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212020002202221 its reverse (122202200020212), we get a palindrome (334222202222433).

The spelling of 212020002202221 in words is "two hundred twelve trillion, twenty billion, two million, two hundred two thousand, two hundred twenty-one".