212121103003 has 4 divisors (see below), whose sum is σ = 213669432360. Its totient is φ = 210572773648.

The previous prime is 212121102911. The next prime is 212121103027. The reversal of 212121103003 is 300301121212.

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

It is a cyclic number.

It is not a de Polignac number, because 212121103003 - 2²¹ = 212119005851 is a prime.

It is a super-3 number, since 3×212121103003³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212121103903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774164473 + ... + 774164746.

It is an arithmetic number, because the mean of its divisors is an integer number (53417358090).

Almost surely, 2^212121103003 is an apocalyptic number.

212121103003 is a deficient number, since it is larger than the sum of its proper divisors (1548329357).

212121103003 is a wasteful number, since it uses less digits than its factorization.

212121103003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548329356.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212121103003 its reverse (300301121212), we get a palindrome (512422224215).

The spelling of 212121103003 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred three thousand, three".