223400221040 has 20 divisors (see below), whose sum is σ = 519405514104. Its totient is φ = 89360088384.

The previous prime is 223400221003. The next prime is 223400221063. The reversal of 223400221040 is 40122004322.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396251302 + ... + 1396251461.

Almost surely, 2^223400221040 is an apocalyptic number.

223400221040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223400221040 is an abundant number, since it is smaller than the sum of its proper divisors (296005293064).

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

223400221040 is a wasteful number, since it uses less digits than its factorization.

223400221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792502776 (or 2792502770 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 223400221040 its reverse (40122004322), we get a palindrome (263522225362).

The spelling of 223400221040 in words is "two hundred twenty-three billion, four hundred million, two hundred twenty-one thousand, forty".