1000023222440 has 32 divisors (see below), whose sum is σ = 2454602456160. Its totient is φ = 363644808000.

The previous prime is 1000023222391. The next prime is 1000023222461. The reversal of 1000023222440 is 442223200001.

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

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, 1136389586 + ... + 1136390465.

It is an arithmetic number, because the mean of its divisors is an integer number (76706326755).

Almost surely, 2^{1000023222440} is an apocalyptic number.

1000023222440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000023222440 is an abundant number, since it is smaller than the sum of its proper divisors (1454579233720).

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

1000023222440 is a wasteful number, since it uses less digits than its factorization.

1000023222440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272780073 (or 2272780069 counting only the distinct ones).

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

Adding to 1000023222440 its reverse (442223200001), we get a palindrome (1442246422441).

The spelling of 1000023222440 in words is "one trillion, twenty-three million, two hundred twenty-two thousand, four hundred forty".