2232131212021 has 4 divisors (see below), whose sum is σ = 2244463428844. Its totient is φ = 2219798995200.

The previous prime is 2232131212019. The next prime is 2232131212027. The reversal of 2232131212021 is 1202121312322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 623761925796 + 1608369286225 = 789786^2 + 1268215^2 .

It is a cyclic number.

It is not a de Polignac number, because 2232131212021 - 2¹ = 2232131212019 is a prime.

It is a super-3 number, since 3×2232131212021³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2232131211983 and 2232131212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2232131212027) 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, 6166108140 + ... + 6166108501.

It is an arithmetic number, because the mean of its divisors is an integer number (561115857211).

Almost surely, 2^{2232131212021} is an apocalyptic number.

It is an amenable number.

2232131212021 is a deficient number, since it is larger than the sum of its proper divisors (12332216823).

2232131212021 is a wasteful number, since it uses less digits than its factorization.

2232131212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12332216822.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2232131212021 its reverse (1202121312322), we get a palindrome (3434252524343).

The spelling of 2232131212021 in words is "two trillion, two hundred thirty-two billion, one hundred thirty-one million, two hundred twelve thousand, twenty-one".