212421443211102 has 16 divisors (see below), whose sum is σ = 425240307282960. Its totient is φ = 70740910926912.

The previous prime is 212421443211059. The next prime is 212421443211169. The reversal of 212421443211102 is 201112344124212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212421443211102.

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 7 ways as a sum of consecutive naturals, for example, 16559195583 + ... + 16559208410.

It is an arithmetic number, because the mean of its divisors is an integer number (26577519205185).

Almost surely, 2^{212421443211102} is an apocalyptic number.

212421443211102 is an abundant number, since it is smaller than the sum of its proper divisors (212818864071858).

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

212421443211102 is a wasteful number, since it uses less digits than its factorization.

212421443211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33118405067.

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 212421443211102 its reverse (201112344124212), we get a palindrome (413533787335314).

The spelling of 212421443211102 in words is "two hundred twelve trillion, four hundred twenty-one billion, four hundred forty-three million, two hundred eleven thousand, one hundred two".