20401211432224 has 48 divisors (see below), whose sum is σ = 45921333665088. Its totient is φ = 8739831958272.

The previous prime is 20401211432213. The next prime is 20401211432237. The reversal of 20401211432224 is 42223411210402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 20401211432192 and 20401211432201.

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, 17906419 + ... + 19011634.

It is an arithmetic number, because the mean of its divisors is an integer number (956694451356).

Almost surely, 2^{20401211432224} is an apocalyptic number.

It is an amenable number.

20401211432224 is an abundant number, since it is smaller than the sum of its proper divisors (25520122232864).

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

20401211432224 is a wasteful number, since it uses less digits than its factorization.

20401211432224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36920537 (or 36920529 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 20401211432224 its reverse (42223411210402), we get a palindrome (62624622642626).

The spelling of 20401211432224 in words is "twenty trillion, four hundred one billion, two hundred eleven million, four hundred thirty-two thousand, two hundred twenty-four".