211220131322 has 4 divisors (see below), whose sum is σ = 316830196986. Its totient is φ = 105610065660.

The previous prime is 211220131307. The next prime is 211220131327. The reversal of 211220131322 is 223131022112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 209113229521 + 2106901801 = 457289^2 + 45901^2 .

It is a super-2 number, since 2×211220131322² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220131294 and 211220131303.

It is not an unprimeable number, because it can be changed into a prime (211220131327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805032829 + ... + 52805032832.

Almost surely, 2^211220131322 is an apocalyptic number.

211220131322 is a deficient number, since it is larger than the sum of its proper divisors (105610065664).

211220131322 is a wasteful number, since it uses less digits than its factorization.

211220131322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105610065663.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211220131322 its reverse (223131022112), we get a palindrome (434351153434).

The spelling of 211220131322 in words is "two hundred eleven billion, two hundred twenty million, one hundred thirty-one thousand, three hundred twenty-two".