211611321002 has 16 divisors (see below), whose sum is σ = 323420519520. Its totient is φ = 103804660752.

The previous prime is 211611321001. The next prime is 211611321007. The reversal of 211611321002 is 200123116112.

It is a super-2 number, since 2×211611321002² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211611321001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4293833 + ... + 4342835.

It is an arithmetic number, because the mean of its divisors is an integer number (20213782470).

Almost surely, 2^211611321002 is an apocalyptic number.

211611321002 is a deficient number, since it is larger than the sum of its proper divisors (111809198518).

211611321002 is a wasteful number, since it uses less digits than its factorization.

211611321002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89797.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 211611321002 its reverse (200123116112), we get a palindrome (411734437114).

The spelling of 211611321002 in words is "two hundred eleven billion, six hundred eleven million, three hundred twenty-one thousand, two".