212111220003 has 16 divisors (see below), whose sum is σ = 284644993536. Its totient is φ = 140492645280.

The previous prime is 212111219981. The next prime is 212111220019. The reversal of 212111220003 is 300022111212.

It is not a de Polignac number, because 212111220003 - 2⁶ = 212111219939 is a prime.

It is a super-2 number, since 2×212111220003² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212111220043) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6900358 + ... + 6931028.

It is an arithmetic number, because the mean of its divisors is an integer number (17790312096).

Almost surely, 2^212111220003 is an apocalyptic number.

212111220003 is a deficient number, since it is larger than the sum of its proper divisors (72533773533).

212111220003 is a wasteful number, since it uses less digits than its factorization.

212111220003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45514.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212111220003 its reverse (300022111212), we get a palindrome (512133331215).

The spelling of 212111220003 in words is "two hundred twelve billion, one hundred eleven million, two hundred twenty thousand, three".