211211222111000 has 128 divisors (see below), whose sum is σ = 507980703672000. Its totient is φ = 82165792896000.

The previous prime is 211211222110879. The next prime is 211211222111009. The reversal of 211211222111000 is 111222112112.

It is a super-2 number, since 2×211211222111000² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211211222111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211222111009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14023130 + ... + 24881129.

Almost surely, 2^{211211222111000} is an apocalyptic number.

211211222111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211222111000 is an abundant number, since it is smaller than the sum of its proper divisors (296769481561000).

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

211211222111000 is a wasteful number, since it uses less digits than its factorization.

211211222111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38904430 (or 38904416 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211211222111000 its reverse (111222112112), we get a palindrome (211322444223112).

The spelling of 211211222111000 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand".