20402341220224 has 32 divisors (see below), whose sum is σ = 40664525509440. Its totient is φ = 10196342661120.

The previous prime is 20402341220171. The next prime is 20402341220251. The reversal of 20402341220224 is 42202214320402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20402341220224² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20402341220192 and 20402341220201.

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, 37446832 + ... + 37987759.

It is an arithmetic number, because the mean of its divisors is an integer number (1270766422170).

Almost surely, 2^{20402341220224} is an apocalyptic number.

It is an amenable number.

20402341220224 is a deficient number, since it is larger than the sum of its proper divisors (20262184289216).

20402341220224 is an equidigital number, since it uses as much as digits as its factorization.

20402341220224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75436718 (or 75436706 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20402341220224 its reverse (42202214320402), we get a palindrome (62604555540626).

The spelling of 20402341220224 in words is "twenty trillion, four hundred two billion, three hundred forty-one million, two hundred twenty thousand, two hundred twenty-four".