211021613211216 has 160 divisors (see below), whose sum is σ = 578433102483456. Its totient is φ = 66062160640000.

The previous prime is 211021613211151. The next prime is 211021613211217. The reversal of 211021613211216 is 612112316120112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021613211217) 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, 7576791691 + ... + 7576819541.

Almost surely, 2^{211021613211216} 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 211021613211216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289216551241728).

211021613211216 is an abundant number, since it is smaller than the sum of its proper divisors (367411489272240).

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

211021613211216 is a wasteful number, since it uses less digits than its factorization.

211021613211216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47281 (or 47275 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

Adding to 211021613211216 its reverse (612112316120112), we get a palindrome (823133929331328).

The spelling of 211021613211216 in words is "two hundred eleven trillion, twenty-one billion, six hundred thirteen million, two hundred eleven thousand, two hundred sixteen".