20421121403241 has 72 divisors (see below), whose sum is σ = 32161976735616. Its totient is φ = 12479845996800.

The previous prime is 20421121403209. The next prime is 20421121403299. The reversal of 20421121403241 is 14230412112402.

20421121403241 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 1 + 12 + 1 + 403 + 241 = 666.

It is not a de Polignac number, because 20421121403241 - 2⁵ = 20421121403209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20421121403201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 887207565 + ... + 887230581.

It is an arithmetic number, because the mean of its divisors is an integer number (446694121328).

Almost surely, 2^{20421121403241} is an apocalyptic number.

It is an amenable number.

20421121403241 is a deficient number, since it is larger than the sum of its proper divisors (11740855332375).

20421121403241 is a wasteful number, since it uses less digits than its factorization.

20421121403241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27063 (or 27047 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 20421121403241 its reverse (14230412112402), we get a palindrome (34651533515643).

The spelling of 20421121403241 in words is "twenty trillion, four hundred twenty-one billion, one hundred twenty-one million, four hundred three thousand, two hundred forty-one".