2121111321332 has 12 divisors (see below), whose sum is σ = 3930294507300. Its totient is φ = 998170033536.

The previous prime is 2121111321289. The next prime is 2121111321347. The reversal of 2121111321332 is 2331231111212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1713653792356 + 407457528976 = 1309066^2 + 638324^2 .

It is a super-2 number, since 2×2121111321332² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121111321298 and 2121111321307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15596406707 + ... + 15596406842.

It is an arithmetic number, because the mean of its divisors is an integer number (327524542275).

Almost surely, 2^{2121111321332} is an apocalyptic number.

It is an amenable number.

2121111321332 is a deficient number, since it is larger than the sum of its proper divisors (1809183185968).

2121111321332 is a wasteful number, since it uses less digits than its factorization.

2121111321332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31192813570 (or 31192813568 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

Adding to 2121111321332 its reverse (2331231111212), we get a palindrome (4452342432544).

The spelling of 2121111321332 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, three hundred twenty-one thousand, three hundred thirty-two".