2121312100333 has 4 divisors (see below), whose sum is σ = 2122330495168. Its totient is φ = 2120293705500.

The previous prime is 2121312100267. The next prime is 2121312100357. The reversal of 2121312100333 is 3330012131212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2121312100333 - 2²¹ = 2121310003181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121312100373) 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, 509194293 + ... + 509198458.

It is an arithmetic number, because the mean of its divisors is an integer number (530582623792).

Almost surely, 2^{2121312100333} is an apocalyptic number.

It is an amenable number.

2121312100333 is a deficient number, since it is larger than the sum of its proper divisors (1018394835).

2121312100333 is a wasteful number, since it uses less digits than its factorization.

2121312100333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018394834.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2121312100333 its reverse (3330012131212), we get a palindrome (5451324231545).

The spelling of 2121312100333 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, one hundred thousand, three hundred thirty-three".