21232012222132 has 6 divisors (see below), whose sum is σ = 37156021388738. Its totient is φ = 10616006111064.

The previous prime is 21232012222067. The next prime is 21232012222151. The reversal of 21232012222132 is 23122221023212.

It can be written as a sum of positive squares in only one way, i.e., 11353085480356 + 9878926741776 = 3369434^2 + 3143076^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21232012222097 and 21232012222106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2654001527763 + ... + 2654001527770.

Almost surely, 2^{21232012222132} is an apocalyptic number.

It is an amenable number.

21232012222132 is a deficient number, since it is larger than the sum of its proper divisors (15924009166606).

21232012222132 is a wasteful number, since it uses less digits than its factorization.

21232012222132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308003055537 (or 5308003055535 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21232012222132 its reverse (23122221023212), we get a palindrome (44354233245344).

The spelling of 21232012222132 in words is "twenty-one trillion, two hundred thirty-two billion, twelve million, two hundred twenty-two thousand, one hundred thirty-two".