323212230220021 has 8 divisors (see below), whose sum is σ = 323677053679320. Its totient is φ = 322747715926272.

The previous prime is 323212230219971. The next prime is 323212230220031. The reversal of 323212230220021 is 120022032212323.

It can be written as a sum of positive squares in 4 ways, for example, as 99611378302500 + 223600851917521 = 9980550^2 + 14953289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323212230220021 is a prime.

It is a super-2 number, since 2×323212230220021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323212230220031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75198976 + ... + 79380793.

It is an arithmetic number, because the mean of its divisors is an integer number (40459631709915).

Almost surely, 2^{323212230220021} is an apocalyptic number.

It is an amenable number.

323212230220021 is a deficient number, since it is larger than the sum of its proper divisors (464823459299).

323212230220021 is a wasteful number, since it uses less digits than its factorization.

323212230220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154582775.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 323212230220021 its reverse (120022032212323), we get a palindrome (443234262432344).

The spelling of 323212230220021 in words is "three hundred twenty-three trillion, two hundred twelve billion, two hundred thirty million, two hundred twenty thousand, twenty-one".