2212120010321 has 4 divisors (see below), whose sum is σ = 2382283088052. Its totient is φ = 2041956932592.

The previous prime is 2212120010291. The next prime is 2212120010357. The reversal of 2212120010321 is 1230100212122.

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 93581539921 + 2118538470400 = 305911^2 + 1455520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212120010321 is a prime.

It is a super-2 number, since 2×2212120010321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212120010321.

It is not an unprimeable number, because it can be changed into a prime (2212120010521) 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, 85081538846 + ... + 85081538871.

It is an arithmetic number, because the mean of its divisors is an integer number (595570772013).

Almost surely, 2^{2212120010321} is an apocalyptic number.

It is an amenable number.

2212120010321 is a deficient number, since it is larger than the sum of its proper divisors (170163077731).

2212120010321 is a wasteful number, since it uses less digits than its factorization.

2212120010321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170163077730.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2212120010321 its reverse (1230100212122), we get a palindrome (3442220222443).

The spelling of 2212120010321 in words is "two trillion, two hundred twelve billion, one hundred twenty million, ten thousand, three hundred twenty-one".