32120202212221 has 4 divisors (see below), whose sum is σ = 32121297260892. Its totient is φ = 32119107163552.

The previous prime is 32120202212201. The next prime is 32120202212237. The reversal of 32120202212221 is 12221220202123.

It is a happy number.

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 23073708320100 + 9046493892121 = 4803510^2 + 3007739^2 .

It is a cyclic number.

It is not a de Polignac number, because 32120202212221 - 2¹⁵ = 32120202179453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32120202212192 and 32120202212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32120202212201) 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, 547480336 + ... + 547539001.

It is an arithmetic number, because the mean of its divisors is an integer number (8030324315223).

Almost surely, 2^{32120202212221} is an apocalyptic number.

It is an amenable number.

32120202212221 is a deficient number, since it is larger than the sum of its proper divisors (1095048671).

32120202212221 is a wasteful number, since it uses less digits than its factorization.

32120202212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095048670.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 32120202212221 its reverse (12221220202123), we get a palindrome (44341422414344).

It can be divided in two parts, 3212020 and 2212221, that added together give a square (5424241 = 2329²).

The spelling of 32120202212221 in words is "thirty-two trillion, one hundred twenty billion, two hundred two million, two hundred twelve thousand, two hundred twenty-one".