222204020421 has 16 divisors (see below), whose sum is σ = 296566089984. Its totient is φ = 147989051904.

The previous prime is 222204020347. The next prime is 222204020431. The reversal of 222204020421 is 124020402222.

222204020421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222204020421 - 2³³ = 213614085829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222204020431) 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, 19056025 + ... + 19067681.

It is an arithmetic number, because the mean of its divisors is an integer number (18535380624).

Almost surely, 2^222204020421 is an apocalyptic number.

It is an amenable number.

222204020421 is a deficient number, since it is larger than the sum of its proper divisors (74362069563).

222204020421 is a wasteful number, since it uses less digits than its factorization.

222204020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17420.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 222204020421 its reverse (124020402222), we get a palindrome (346224422643).

The spelling of 222204020421 in words is "two hundred twenty-two billion, two hundred four million, twenty thousand, four hundred twenty-one".