20421022240341 has 24 divisors (see below), whose sum is σ = 31331934967320. Its totient is φ = 12772253684736.

The previous prime is 20421022240331. The next prime is 20421022240369. The reversal of 20421022240341 is 14304222012402.

It is a happy number.

20421022240341 is a `hidden beast` number, since 2 + 0 + 4 + 210 + 2 + 2 + 2 + 403 + 41 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5510967527025 + 14910054713316 = 2347545^2 + 3861354^2 .

It is not a de Polignac number, because 20421022240341 - 2³⁰ = 20419948498517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421022240331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213164146 + ... + 213259923.

It is an arithmetic number, because the mean of its divisors is an integer number (1305497290305).

Almost surely, 2^{20421022240341} is an apocalyptic number.

It is an amenable number.

20421022240341 is a deficient number, since it is larger than the sum of its proper divisors (10910912726979).

20421022240341 is a wasteful number, since it uses less digits than its factorization.

20421022240341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426424405 (or 426424402 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20421022240341 its reverse (14304222012402), we get a palindrome (34725244252743).

The spelling of 20421022240341 in words is "twenty trillion, four hundred twenty-one billion, twenty-two million, two hundred forty thousand, three hundred forty-one".