2121302010203 has 4 divisors (see below), whose sum is σ = 2121678199920. Its totient is φ = 2120925820488.

The previous prime is 2121302010173. The next prime is 2121302010241. The reversal of 2121302010203 is 3020102031212.

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 2121302010203 - 2⁸ = 2121302009947 is a prime.

It is a super-2 number, since 2×2121302010203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121302010283) 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, 188086400 + ... + 188097677.

It is an arithmetic number, because the mean of its divisors is an integer number (530419549980).

Almost surely, 2^{2121302010203} is an apocalyptic number.

2121302010203 is a deficient number, since it is larger than the sum of its proper divisors (376189717).

2121302010203 is an equidigital number, since it uses as much as digits as its factorization.

2121302010203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376189716.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2121302010203 its reverse (3020102031212), we get a palindrome (5141404041415).

The spelling of 2121302010203 in words is "two trillion, one hundred twenty-one billion, three hundred two million, ten thousand, two hundred three".