212111012122104 has 32 divisors (see below), whose sum is σ = 530285656475520. Its totient is φ = 70702587218016.

The previous prime is 212111012122103. The next prime is 212111012122129. The reversal of 212111012122104 is 401221210111212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111012122103) 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, 66118554 + ... + 69252329.

It is an arithmetic number, because the mean of its divisors is an integer number (16571426764860).

Almost surely, 2^{212111012122104} is an apocalyptic number.

212111012122104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212111012122104 is an abundant number, since it is smaller than the sum of its proper divisors (318174644353416).

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

212111012122104 is a wasteful number, since it uses less digits than its factorization.

212111012122104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135436179 (or 135436175 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212111012122104 its reverse (401221210111212), we get a palindrome (613332222233316).

The spelling of 212111012122104 in words is "two hundred twelve trillion, one hundred eleven billion, twelve million, one hundred twenty-two thousand, one hundred four".