211221102003 has 8 divisors (see below), whose sum is σ = 281641785600. Its totient is φ = 140807243208.

The previous prime is 211221101999. The next prime is 211221102007. The reversal of 211221102003 is 300201122112.

It is an interprime number because it is at equal distance from previous prime (211221101999) and next prime (211221102007).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211221102003 - 2² = 211221101999 is a prime.

It is a super-2 number, since 2×211221102003² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211221102007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633543 + ... + 1758096.

It is an arithmetic number, because the mean of its divisors is an integer number (35205223200).

Almost surely, 2^211221102003 is an apocalyptic number.

211221102003 is a deficient number, since it is larger than the sum of its proper divisors (70420683597).

211221102003 is a wasteful number, since it uses less digits than its factorization.

211221102003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412401.

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

Adding to 211221102003 its reverse (300201122112), we get a palindrome (511422224115).

The spelling of 211221102003 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred two thousand, three".