211021213332 has 96 divisors (see below), whose sum is σ = 512448378624. Its totient is φ = 67529548800.

The previous prime is 211021213289. The next prime is 211021213343. The reversal of 211021213332 is 233312120112.

It is a super-2 number, since 2×211021213332² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211021213299 and 211021213308.

It is a congruent number.

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, 12842482 + ... + 12858902.

It is an arithmetic number, because the mean of its divisors is an integer number (5338003944).

Almost surely, 2^211021213332 is an apocalyptic number.

It is an amenable number.

211021213332 is an abundant number, since it is smaller than the sum of its proper divisors (301427165292).

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

211021213332 is a wasteful number, since it uses less digits than its factorization.

211021213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849 (or 16847 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211021213332 its reverse (233312120112), we get a palindrome (444333333444).

The spelling of 211021213332 in words is "two hundred eleven billion, twenty-one million, two hundred thirteen thousand, three hundred thirty-two".