212211022012 has 24 divisors (see below), whose sum is σ = 405145445040. Its totient is φ = 96455909760.

The previous prime is 212211022007. The next prime is 212211022013. The reversal of 212211022012 is 210220112212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211022013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338064 + ... + 1488232.

It is an arithmetic number, because the mean of its divisors is an integer number (16881060210).

Almost surely, 2^212211022012 is an apocalyptic number.

212211022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212211022012 is a deficient number, since it is larger than the sum of its proper divisors (192934423028).

212211022012 is a wasteful number, since it uses less digits than its factorization.

212211022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182301 (or 182299 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212211022012 its reverse (210220112212), we get a palindrome (422431134224).

The spelling of 212211022012 in words is "two hundred twelve billion, two hundred eleven million, twenty-two thousand, twelve".