20522454103 has 4 divisors (see below), whose sum is σ = 20550452728. Its totient is φ = 20494455480.

The previous prime is 20522454091. The next prime is 20522454107. The reversal of 20522454103 is 30145422502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20522454103 - 2²⁵ = 20488899671 is a prime.

It is a super-2 number, since 2×20522454103² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522454107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13998213 + ... + 13999678.

It is an arithmetic number, because the mean of its divisors is an integer number (5137613182).

Almost surely, 2^20522454103 is an apocalyptic number.

20522454103 is a deficient number, since it is larger than the sum of its proper divisors (27998625).

20522454103 is an equidigital number, since it uses as much as digits as its factorization.

20522454103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27998624.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20522454103 its reverse (30145422502), we get a palindrome (50667876605).

The spelling of 20522454103 in words is "twenty billion, five hundred twenty-two million, four hundred fifty-four thousand, one hundred three".