211220322352 has 20 divisors (see below), whose sum is σ = 440719326880. Its totient is φ = 97486302528.

The previous prime is 211220322347. The next prime is 211220322377. The reversal of 211220322352 is 253223022112.

It is a super-2 number, since 2×211220322352² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507740952 + ... + 507741367.

It is an arithmetic number, because the mean of its divisors is an integer number (22035966344).

Almost surely, 2^211220322352 is an apocalyptic number.

It is an amenable number.

211220322352 is an abundant number, since it is smaller than the sum of its proper divisors (229499004528).

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

211220322352 is a wasteful number, since it uses less digits than its factorization.

211220322352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015482340 (or 1015482334 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 211220322352 its reverse (253223022112), we get a palindrome (464443344464).

The spelling of 211220322352 in words is "two hundred eleven billion, two hundred twenty million, three hundred twenty-two thousand, three hundred fifty-two".