2121540411333 has 16 divisors (see below), whose sum is σ = 3233125143680. Its totient is φ = 1212195684096.

The previous prime is 2121540411299. The next prime is 2121540411409. The reversal of 2121540411333 is 3331140451212.

It is not a de Polignac number, because 2121540411333 - 2⁶ = 2121540411269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121540411333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121540411533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4482760 + ... + 4933377.

It is an arithmetic number, because the mean of its divisors is an integer number (202070321480).

Almost surely, 2^{2121540411333} is an apocalyptic number.

It is an amenable number.

2121540411333 is a deficient number, since it is larger than the sum of its proper divisors (1111584732347).

2121540411333 is a wasteful number, since it uses less digits than its factorization.

2121540411333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9426876.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 2121540411333 its reverse (3331140451212), we get a palindrome (5452680862545).

The spelling of 2121540411333 in words is "two trillion, one hundred twenty-one billion, five hundred forty million, four hundred eleven thousand, three hundred thirty-three".