211110202221012 has 144 divisors (see below), whose sum is σ = 555257520679680. Its totient is φ = 70134459752448.

The previous prime is 211110202221011. The next prime is 211110202221013. The reversal of 211110202221012 is 210122202011112.

211110202221012 is a `hidden beast` number, since 211 + 110 + 20 + 222 + 101 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (211110202221011) and next prime (211110202221013).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211110202221011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2117128468 + ... + 2117228180.

It is an arithmetic number, because the mean of its divisors is an integer number (3855955004720).

Almost surely, 2^{211110202221012} 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 211110202221012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277628760339840).

211110202221012 is an abundant number, since it is smaller than the sum of its proper divisors (344147318458668).

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

211110202221012 is a wasteful number, since it uses less digits than its factorization.

211110202221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107004 (or 106990 counting only the distinct ones).

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

Adding to 211110202221012 its reverse (210122202011112), we get a palindrome (421232404232124).

The spelling of 211110202221012 in words is "two hundred eleven trillion, one hundred ten billion, two hundred two million, two hundred twenty-one thousand, twelve".