20424140221412 has 24 divisors (see below), whose sum is σ = 35774385204600. Its totient is φ = 10202888731136.

The previous prime is 20424140221411. The next prime is 20424140221417. The reversal of 20424140221412 is 21412204142402.

It can be written as a sum of positive squares in 4 ways, for example, as 2384973680896 + 18039166540516 = 1544336^2 + 4247254^2 .

It is not an unprimeable number, because it can be changed into a prime (20424140221411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59376014 + ... + 59719002.

It is an arithmetic number, because the mean of its divisors is an integer number (1490599383525).

Almost surely, 2^{20424140221412} is an apocalyptic number.

It is an amenable number.

20424140221412 is a deficient number, since it is larger than the sum of its proper divisors (15350244983188).

20424140221412 is a wasteful number, since it uses less digits than its factorization.

20424140221412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356335 (or 356333 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 20424140221412 its reverse (21412204142402), we get a palindrome (41836344363814).

The spelling of 20424140221412 in words is "twenty trillion, four hundred twenty-four billion, one hundred forty million, two hundred twenty-one thousand, four hundred twelve".