213111222003 has 24 divisors (see below), whose sum is σ = 315882128016. Its totient is φ = 138368563200.

The previous prime is 213111221989. The next prime is 213111222013. The reversal of 213111222003 is 300222111312.

It is not a de Polignac number, because 213111222003 - 2³² = 208816254707 is a prime.

It is a super-2 number, since 2×213111222003² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213111222013) 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 in 23 ways as a sum of consecutive naturals, for example, 287553 + ... + 713378.

It is an arithmetic number, because the mean of its divisors is an integer number (13161755334).

Almost surely, 2^213111222003 is an apocalyptic number.

213111222003 is a deficient number, since it is larger than the sum of its proper divisors (102770906013).

213111222003 is a wasteful number, since it uses less digits than its factorization.

213111222003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001555 (or 1001552 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213111222003 its reverse (300222111312), we get a palindrome (513333333315).

The spelling of 213111222003 in words is "two hundred thirteen billion, one hundred eleven million, two hundred twenty-two thousand, three".