2121002212003 has 4 divisors (see below), whose sum is σ = 2123043601120. Its totient is φ = 2118960822888.

The previous prime is 2121002211943. The next prime is 2121002212009. The reversal of 2121002212003 is 3002122001212.

It is a happy number.

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 2121002212003 - 2¹⁷ = 2121002080931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121002212009) 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, 1020693000 + ... + 1020695077.

It is an arithmetic number, because the mean of its divisors is an integer number (530760900280).

Almost surely, 2^{2121002212003} is an apocalyptic number.

2121002212003 is a deficient number, since it is larger than the sum of its proper divisors (2041389117).

2121002212003 is a wasteful number, since it uses less digits than its factorization.

2121002212003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041389116.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2121002212003 its reverse (3002122001212), we get a palindrome (5123124213215).

The spelling of 2121002212003 in words is "two trillion, one hundred twenty-one billion, two million, two hundred twelve thousand, three".