212222121120212 has 48 divisors (see below), whose sum is σ = 426448164804480. Its totient is φ = 90523259484672.

The previous prime is 212222121120203. The next prime is 212222121120259. The reversal of 212222121120212 is 212021121222212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8305928 + ... + 22213344.

It is an arithmetic number, because the mean of its divisors is an integer number (8884336766760).

Almost surely, 2^{212222121120212} is an apocalyptic number.

It is an amenable number.

212222121120212 is an abundant number, since it is smaller than the sum of its proper divisors (214226043684268).

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

212222121120212 is a wasteful number, since it uses less digits than its factorization.

212222121120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910000 (or 13909998 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212222121120212 its reverse (212021121222212), we get a palindrome (424243242342424).

The spelling of 212222121120212 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".