212221034555422 has 32 divisors (see below), whose sum is σ = 339005055664800. Its totient is φ = 99291716256768.

The previous prime is 212221034555417. The next prime is 212221034555423. The reversal of 212221034555422 is 224555430122212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221034555423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28354848 + ... + 35049100.

It is an arithmetic number, because the mean of its divisors is an integer number (10593907989525).

Almost surely, 2^{212221034555422} is an apocalyptic number.

212221034555422 is a deficient number, since it is larger than the sum of its proper divisors (126784021109378).

212221034555422 is a wasteful number, since it uses less digits than its factorization.

212221034555422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699660.

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 212221034555422 its reverse (224555430122212), we get a palindrome (436776464677634).

The spelling of 212221034555422 in words is "two hundred twelve trillion, two hundred twenty-one billion, thirty-four million, five hundred fifty-five thousand, four hundred twenty-two".