22312101222121 has 4 divisors (see below), whose sum is σ = 22320386446212. Its totient is φ = 22303815998032.

The previous prime is 22312101222067. The next prime is 22312101222179. The reversal of 22312101222121 is 12122210121322.

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 17963729396496 + 4348371825625 = 4238364^2 + 2085275^2 .

It is a cyclic number.

It is not a de Polignac number, because 22312101222121 - 2³¹ = 22309953738473 is a prime.

It is a super-3 number, since 3×22312101222121³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22312101222092 and 22312101222101.

It is not an unprimeable number, because it can be changed into a prime (22312101222181) 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 3 ways as a sum of consecutive naturals, for example, 4142608006 + ... + 4142613391.

It is an arithmetic number, because the mean of its divisors is an integer number (5580096611553).

Almost surely, 2^{22312101222121} is an apocalyptic number.

It is an amenable number.

22312101222121 is a deficient number, since it is larger than the sum of its proper divisors (8285224091).

22312101222121 is an equidigital number, since it uses as much as digits as its factorization.

22312101222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285224090.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 22312101222121 its reverse (12122210121322), we get a palindrome (34434311343443).

The spelling of 22312101222121 in words is "twenty-two trillion, three hundred twelve billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-one".