32121000022221 has 36 divisors (see below), whose sum is σ = 51011502638460. Its totient is φ = 19462254134400.

The previous prime is 32121000022219. The next prime is 32121000022261. The reversal of 32121000022221 is 12222000012123.

32121000022221 is a `hidden beast` number, since 321 + 2 + 100 + 0 + 0 + 22 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26123741877321 + 5997258144900 = 5111139^2 + 2448930^2 .

It is not a de Polignac number, because 32121000022221 - 2¹ = 32121000022219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32121000022194 and 32121000022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121000022261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 426375 + ... + 8026443.

Almost surely, 2^{32121000022221} is an apocalyptic number.

It is an amenable number.

32121000022221 is a deficient number, since it is larger than the sum of its proper divisors (18890502616239).

32121000022221 is a wasteful number, since it uses less digits than its factorization.

32121000022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7603978 (or 7603964 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 32121000022221 its reverse (12222000012123), we get a palindrome (44343000034344).

The spelling of 32121000022221 in words is "thirty-two trillion, one hundred twenty-one billion, twenty-two thousand, two hundred twenty-one".