222421234040 has 32 divisors (see below), whose sum is σ = 503806500000. Its totient is φ = 88371387264.

The previous prime is 222421234001. The next prime is 222421234073. The reversal of 222421234040 is 40432124222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18653540 + ... + 18665459.

It is an arithmetic number, because the mean of its divisors is an integer number (15743953125).

Almost surely, 2^222421234040 is an apocalyptic number.

222421234040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222421234040 is an abundant number, since it is smaller than the sum of its proper divisors (281385265960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222421234040 is a wasteful number, since it uses less digits than its factorization.

222421234040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37319159 (or 37319155 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 222421234040 its reverse (40432124222), we get a palindrome (262853358262).

The spelling of 222421234040 in words is "two hundred twenty-two billion, four hundred twenty-one million, two hundred thirty-four thousand, forty".