212222221000002 has 24 divisors (see below), whose sum is σ = 459815852199600. Its totient is φ = 70740580328280.

The previous prime is 212222220999973. The next prime is 212222221000033. The reversal of 212222221000002 is 200000122222212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5014324 + ... + 21203487.

It is an arithmetic number, because the mean of its divisors is an integer number (19158993841650).

Almost surely, 2^{212222221000002} is an apocalyptic number.

212222221000002 is an abundant number, since it is smaller than the sum of its proper divisors (247593631199598).

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

212222221000002 is a wasteful number, since it uses less digits than its factorization.

212222221000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26667518 (or 26667515 counting only the distinct ones).

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

Adding to 212222221000002 its reverse (200000122222212), we get a palindrome (412222343222214).

The spelling of 212222221000002 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, two", and thus it is an aban number.