20421011241 has 12 divisors (see below), whose sum is σ = 29498637168. Its totient is φ = 13613259384.

The previous prime is 20421011231. The next prime is 20421011257. The reversal of 20421011241 is 14211012402.

20421011241 is a `hidden beast` number, since 2 + 0 + 421 + 0 + 1 + 1 + 241 = 666.

It is not a de Polignac number, because 20421011241 - 2⁵ = 20421011209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20421011231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147826 + ... + 250388.

It is an arithmetic number, because the mean of its divisors is an integer number (2458219764).

Almost surely, 2^20421011241 is an apocalyptic number.

It is an amenable number.

20421011241 is a deficient number, since it is larger than the sum of its proper divisors (9077625927).

20421011241 is a wasteful number, since it uses less digits than its factorization.

20421011241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124692 (or 124689 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20421011241 its reverse (14211012402), we get a palindrome (34632023643).

The spelling of 20421011241 in words is "twenty billion, four hundred twenty-one million, eleven thousand, two hundred forty-one".