2121312223322 has 4 divisors (see below), whose sum is σ = 3181968334986. Its totient is φ = 1060656111660.

The previous prime is 2121312223321. The next prime is 2121312223339. The reversal of 2121312223322 is 2233222131212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1408923894361 + 712388328961 = 1186981^2 + 844031^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121312223291 and 2121312223300.

It is not an unprimeable number, because it can be changed into a prime (2121312223321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530328055829 + ... + 530328055832.

Almost surely, 2^{2121312223322} is an apocalyptic number.

2121312223322 is a deficient number, since it is larger than the sum of its proper divisors (1060656111664).

2121312223322 is a wasteful number, since it uses less digits than its factorization.

2121312223322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060656111663.

The product of its digits is 3456, while the sum is 26.

Adding to 2121312223322 its reverse (2233222131212), we get a palindrome (4354534354534).

The spelling of 2121312223322 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, two hundred twenty-three thousand, three hundred twenty-two".