1222240422221 has 16 divisors (see below), whose sum is σ = 1504366934784. Its totient is φ = 967001704704.

The previous prime is 1222240422217. The next prime is 1222240422331.

1222240422221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222240422221 - 2² = 1222240422217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222240422721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690136 + ... + 2302398.

It is an arithmetic number, because the mean of its divisors is an integer number (94022933424).

Almost surely, 2^{1222240422221} is an apocalyptic number.

It is an amenable number.

1222240422221 is a deficient number, since it is larger than the sum of its proper divisors (282126512563).

1222240422221 is a wasteful number, since it uses less digits than its factorization.

1222240422221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634220.

The product of its (nonzero) digits is 4096, while the sum is 26.

It can be divided in two parts, 1222240 and 422221, that added together give a palindrome (1644461).

The spelling of 1222240422221 in words is "one trillion, two hundred twenty-two billion, two hundred forty million, four hundred twenty-two thousand, two hundred twenty-one".