211222110102012 has 144 divisors (see below), whose sum is σ = 548110719636480. Its totient is φ = 68566131504000.

The previous prime is 211222110102007. The next prime is 211222110102023. The reversal of 211222110102012 is 210201011222112.

It is a super-2 number, since 2×211222110102012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74147187 + ... + 76943157.

It is an arithmetic number, because the mean of its divisors is an integer number (3806324441920).

Almost surely, 2^{211222110102012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211222110102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274055359818240).

211222110102012 is an abundant number, since it is smaller than the sum of its proper divisors (336888609534468).

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

211222110102012 is a wasteful number, since it uses less digits than its factorization.

211222110102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796424 (or 2796419 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211222110102012 its reverse (210201011222112), we get a palindrome (421423121324124).

The spelling of 211222110102012 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, one hundred two thousand, twelve".