20420022441 has 16 divisors (see below), whose sum is σ = 33509780864. Its totient is φ = 10771000704.

The previous prime is 20420022391. The next prime is 20420022451. The reversal of 20420022441 is 14422002402.

It is not a de Polignac number, because 20420022441 - 2⁶ = 20420022377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20420022451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37399036 + ... + 37399581.

It is an arithmetic number, because the mean of its divisors is an integer number (2094361304).

Almost surely, 2^20420022441 is an apocalyptic number.

20420022441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20420022441 is a deficient number, since it is larger than the sum of its proper divisors (13089758423).

20420022441 is a wasteful number, since it uses less digits than its factorization.

20420022441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74798640.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20420022441 its reverse (14422002402), we get a palindrome (34842024843).

The spelling of 20420022441 in words is "twenty billion, four hundred twenty million, twenty-two thousand, four hundred forty-one".