2231331212122 has 4 divisors (see below), whose sum is σ = 3346996818186. Its totient is φ = 1115665606060.

The previous prime is 2231331212113. The next prime is 2231331212129. The reversal of 2231331212122 is 2212121331322.

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., 1506243198681 + 725088013441 = 1227291^2 + 851521^2 .

It is a super-3 number, since 3×2231331212122³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231331212129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557832803029 + ... + 557832803032.

Almost surely, 2^{2231331212122} is an apocalyptic number.

2231331212122 is a deficient number, since it is larger than the sum of its proper divisors (1115665606064).

2231331212122 is a wasteful number, since it uses less digits than its factorization.

2231331212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115665606063.

The product of its digits is 1728, while the sum is 25.

Adding to 2231331212122 its reverse (2212121331322), we get a palindrome (4443452543444).

The spelling of 2231331212122 in words is "two trillion, two hundred thirty-one billion, three hundred thirty-one million, two hundred twelve thousand, one hundred twenty-two".