212012221212222 has 48 divisors (see below), whose sum is σ = 447534472600080. Its totient is φ = 66948479288064.

The previous prime is 212012221212199. The next prime is 212012221212257. The reversal of 212012221212222 is 222212122210212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212012221212192 and 212012221212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51089638 + ... + 55083350.

It is an arithmetic number, because the mean of its divisors is an integer number (9323634845835).

Almost surely, 2^{212012221212222} is an apocalyptic number.

212012221212222 is an abundant number, since it is smaller than the sum of its proper divisors (235522251387858).

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

212012221212222 is a wasteful number, since it uses less digits than its factorization.

212012221212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018265 (or 4018246 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 212012221212222 its reverse (222212122210212), we get a palindrome (434224343422434).

The spelling of 212012221212222 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".