211222102121000 has 128 divisors (see below), whose sum is σ = 497435516098560. Its totient is φ = 83947669056000.

The previous prime is 211222102120999. The next prime is 211222102121011. The reversal of 211222102121000 is 121201222112.

It is a super-2 number, since 2×211222102121000² (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 211222102121000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98395124 + ... + 100518876.

It is an arithmetic number, because the mean of its divisors is an integer number (3886214969520).

Almost surely, 2^{211222102121000} is an apocalyptic number.

211222102121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222102121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248717758049280).

211222102121000 is an abundant number, since it is smaller than the sum of its proper divisors (286213413977560).

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

211222102121000 is a wasteful number, since it uses less digits than its factorization.

211222102121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124412 (or 2124398 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211222102121000 its reverse (121201222112), we get a palindrome (211343303343112).

The spelling of 211222102121000 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, one hundred twenty-one thousand".