20223121320240 has 80 divisors (see below), whose sum is σ = 62704705162848. Its totient is φ = 5391711571968.

The previous prime is 20223121320239. The next prime is 20223121320271. The reversal of 20223121320240 is 4202312132202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20223121320240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7598569 + ... + 9908808.

Almost surely, 2^{20223121320240} is an apocalyptic number.

20223121320240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223121320240 is an abundant number, since it is smaller than the sum of its proper divisors (42481583842608).

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

20223121320240 is a wasteful number, since it uses less digits than its factorization.

20223121320240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17512206 (or 17512200 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20223121320240 its reverse (4202312132202), we get a palindrome (24425433452442).

The spelling of 20223121320240 in words is "twenty trillion, two hundred twenty-three billion, one hundred twenty-one million, three hundred twenty thousand, two hundred forty".