10222000122221 has 4 divisors (see below), whose sum is σ = 10226336993532. Its totient is φ = 10217663250912.

The previous prime is 10222000122211. The next prime is 10222000122233. The reversal of 10222000122221 is 12222100022201.

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 2012457169321 + 8209542952900 = 1418611^2 + 2865230^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222000122221 - 2¹⁸ = 10221999860077 is a prime.

It is a super-2 number, since 2×10222000122221² (a number of 27 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 10222000122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222000122211) 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, 2168432120 + ... + 2168436833.

It is an arithmetic number, because the mean of its divisors is an integer number (2556584248383).

Almost surely, 2^{10222000122221} is an apocalyptic number.

It is an amenable number.

10222000122221 is a deficient number, since it is larger than the sum of its proper divisors (4336871311).

10222000122221 is an equidigital number, since it uses as much as digits as its factorization.

10222000122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336871310.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10222000122221 its reverse (12222100022201), we get a palindrome (22444100144422).

The spelling of 10222000122221 in words is "ten trillion, two hundred twenty-two billion, one hundred twenty-two thousand, two hundred twenty-one".