222421123025 has 12 divisors (see below), whose sum is σ = 276209602332. Its totient is φ = 177674053440.

The previous prime is 222421122991. The next prime is 222421123049. The reversal of 222421123025 is 520321124222.

It can be written as a sum of positive squares in 6 ways, for example, as 13528248721 + 208892874304 = 116311^2 + 457048^2 .

It is not a de Polignac number, because 222421123025 - 2¹⁴ = 222421106641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222421122985 and 222421123003.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6553862 + ... + 6587711.

It is an arithmetic number, because the mean of its divisors is an integer number (23017466861).

Almost surely, 2^222421123025 is an apocalyptic number.

222421123025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222421123025 is a deficient number, since it is larger than the sum of its proper divisors (53788479307).

222421123025 is a wasteful number, since it uses less digits than its factorization.

222421123025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142260 (or 13142255 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 222421123025 its reverse (520321124222), we get a palindrome (742742247247).

The spelling of 222421123025 in words is "two hundred twenty-two billion, four hundred twenty-one million, one hundred twenty-three thousand, twenty-five".