1225222225221 has 32 divisors (see below), whose sum is σ = 1706987560320. Its totient is φ = 780706080000.

The previous prime is 1225222225193. The next prime is 1225222225309.

1225222225221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1225222225221 - 2⁷ = 1225222225093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225222225621) 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 31 ways as a sum of consecutive naturals, for example, 86993046 + ... + 87007128.

It is an arithmetic number, because the mean of its divisors is an integer number (53343361260).

Almost surely, 2^{1225222225221} is an apocalyptic number.

It is an amenable number.

1225222225221 is a deficient number, since it is larger than the sum of its proper divisors (481765335099).

1225222225221 is a wasteful number, since it uses less digits than its factorization.

1225222225221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24117.

The product of its digits is 12800, while the sum is 30.

The spelling of 1225222225221 in words is "one trillion, two hundred twenty-five billion, two hundred twenty-two million, two hundred twenty-five thousand, two hundred twenty-one".