212121020010222 has 12 divisors (see below), whose sum is σ = 459595543355520. Its totient is φ = 70707006670068.

The previous prime is 212121020010217. The next prime is 212121020010271. The reversal of 212121020010222 is 222010020121212.

It is a happy number.

212121020010222 is a `hidden beast` number, since 2 + 1 + 21 + 210 + 200 + 10 + 222 = 666.

It is a super-3 number, since 3×212121020010222³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11784501111679 = 212121020010222 / (2 + 1 + 2 + 1 + 2 + 1 + 0 + 2 + 0 + 0 + 1 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 212121020010195 and 212121020010204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5892250555822 + ... + 5892250555857.

It is an arithmetic number, because the mean of its divisors is an integer number (38299628612960).

Almost surely, 2^{212121020010222} is an apocalyptic number.

212121020010222 is an abundant number, since it is smaller than the sum of its proper divisors (247474523345298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212121020010222 is a wasteful number, since it uses less digits than its factorization.

212121020010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11784501111687 (or 11784501111684 counting only the distinct ones).

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

Adding to 212121020010222 its reverse (222010020121212), we get a palindrome (434131040131434).

The spelling of 212121020010222 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, ten thousand, two hundred twenty-two".