2121211020203 has 8 divisors (see below), whose sum is σ = 2314560737520. Its totient is φ = 1927946694880.

The previous prime is 2121211020133. The next prime is 2121211020223. The reversal of 2121211020203 is 3020201121212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121211020203 - 2³⁶ = 2052491543467 is a prime.

It is a super-3 number, since 3×2121211020203³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121211020223) 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, 21296048 + ... + 21395421.

It is an arithmetic number, because the mean of its divisors is an integer number (289320092190).

Almost surely, 2^{2121211020203} is an apocalyptic number.

2121211020203 is a deficient number, since it is larger than the sum of its proper divisors (193349717317).

2121211020203 is a wasteful number, since it uses less digits than its factorization.

2121211020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42695997.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2121211020203 its reverse (3020201121212), we get a palindrome (5141412141415).

The spelling of 2121211020203 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, twenty thousand, two hundred three".