1222454542221 has 48 divisors (see below), whose sum is σ = 2004864376320. Its totient is φ = 716981918400.

The previous prime is 1222454542051. The next prime is 1222454542229.

1222454542221 is a `hidden beast` number, since 1 + 2 + 224 + 5 + 4 + 5 + 422 + 2 + 1 = 666.

1222454542221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1222454542221 - 2⁹ = 1222454541709 is a prime.

It is a super-2 number, since 2×1222454542221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222454542229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1274616 + ... + 2017313.

It is an arithmetic number, because the mean of its divisors is an integer number (41768007840).

Almost surely, 2^{1222454542221} is an apocalyptic number.

1222454542221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222454542221 is a deficient number, since it is larger than the sum of its proper divisors (782409834099).

1222454542221 is a wasteful number, since it uses less digits than its factorization.

1222454542221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291999 (or 3291974 counting only the distinct ones).

The product of its digits is 102400, while the sum is 36.

The spelling of 1222454542221 in words is "one trillion, two hundred twenty-two billion, four hundred fifty-four million, five hundred forty-two thousand, two hundred twenty-one".