212121001210222 has 32 divisors (see below), whose sum is σ = 344994457010112. Its totient is φ = 97236273049344.

The previous prime is 212121001210211. The next prime is 212121001210289. The reversal of 212121001210222 is 222012100121212.

It is a super-3 number, since 3×212121001210222³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212121001210222.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 41694498 + ... + 46504549.

It is an arithmetic number, because the mean of its divisors is an integer number (10781076781566).

Almost surely, 2^{212121001210222} is an apocalyptic number.

212121001210222 is a deficient number, since it is larger than the sum of its proper divisors (132873455799890).

212121001210222 is a wasteful number, since it uses less digits than its factorization.

212121001210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88199692.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212121001210222 its reverse (222012100121212), we get a palindrome (434133101331434).

The spelling of 212121001210222 in words is "two hundred twelve trillion, one hundred twenty-one billion, one million, two hundred ten thousand, two hundred twenty-two".