212111122212010 has 192 divisors, whose sum is σ = 472342626754560. Its totient is φ = 68238695669760.

The previous prime is 212111122212001. The next prime is 212111122212013. The reversal of 212111122212010 is 10212221111212.

It is a happy number.

It is a super-2 number, since 2×212111122212010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212111122212013) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 126552250 + ... + 128217370.

It is an arithmetic number, because the mean of its divisors is an integer number (2460117847680).

Almost surely, 2^{212111122212010} is an apocalyptic number.

212111122212010 is an abundant number, since it is smaller than the sum of its proper divisors (260231504542550).

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

212111122212010 is a wasteful number, since it uses less digits than its factorization.

212111122212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665381 (or 1665374 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212111122212010 its reverse (10212221111212), we get a palindrome (222323343323222).

The spelling of 212111122212010 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, ten".