2121213103203 has 8 divisors (see below), whose sum is σ = 2951253013248. Its totient is φ = 1352657630984.

The previous prime is 2121213103193. The next prime is 2121213103213. The reversal of 2121213103203 is 3023013121212.

It is an interprime number because it is at equal distance from previous prime (2121213103193) and next prime (2121213103213).

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 2121213103203 - 2⁴ = 2121213103187 is a prime.

It is a super-2 number, since 2×2121213103203² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121213103203.

It is not an unprimeable number, because it can be changed into a prime (2121213103213) 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, 15371109375 + ... + 15371109512.

It is an arithmetic number, because the mean of its divisors is an integer number (368906626656).

Almost surely, 2^{2121213103203} is an apocalyptic number.

2121213103203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2121213103203 is a deficient number, since it is larger than the sum of its proper divisors (830039910045).

2121213103203 is a wasteful number, since it uses less digits than its factorization.

2121213103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30742218913.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2121213103203 its reverse (3023013121212), we get a palindrome (5144226224415).

The spelling of 2121213103203 in words is "two trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred three thousand, two hundred three".