222342002421 has 16 divisors (see below), whose sum is σ = 369607484928. Its totient is φ = 115502338800.

The previous prime is 222342002417. The next prime is 222342002437. The reversal of 222342002421 is 124200243222.

It is not a de Polignac number, because 222342002421 - 2² = 222342002417 is a prime.

It is a super-2 number, since 2×222342002421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222342002391 and 222342002400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222342002401) 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 15 ways as a sum of consecutive naturals, for example, 481259515 + ... + 481259976.

It is an arithmetic number, because the mean of its divisors is an integer number (23100467808).

Almost surely, 2^222342002421 is an apocalyptic number.

222342002421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222342002421 is a deficient number, since it is larger than the sum of its proper divisors (147265482507).

222342002421 is a wasteful number, since it uses less digits than its factorization.

222342002421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962519512.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 222342002421 its reverse (124200243222), we get a palindrome (346542245643).

The spelling of 222342002421 in words is "two hundred twenty-two billion, three hundred forty-two million, two thousand, four hundred twenty-one".