2121210031203 has 80 divisors (see below), whose sum is σ = 3379020986880. Its totient is φ = 1321506503424.

The previous prime is 2121210031151. The next prime is 2121210031211. The reversal of 2121210031203 is 3021300121212.

It is not a de Polignac number, because 2121210031203 - 2¹⁰ = 2121210030179 is a prime.

It is a super-3 number, since 3×2121210031203³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121210032203) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 111170818 + ... + 111189896.

It is an arithmetic number, because the mean of its divisors is an integer number (42237762336).

Almost surely, 2^{2121210031203} is an apocalyptic number.

2121210031203 is a deficient number, since it is larger than the sum of its proper divisors (1257810955677).

2121210031203 is a wasteful number, since it uses less digits than its factorization.

2121210031203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19678 (or 19669 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2121210031203 its reverse (3021300121212), we get a palindrome (5142510152415).

Subtracting 2121210031203 from its reverse (3021300121212), we obtain a palindrome (900090090009).

The spelling of 2121210031203 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, thirty-one thousand, two hundred three".