105024055021 has 2 divisors, whose sum is σ = 105024055022. Its totient is φ = 105024055020.

The previous prime is 105024055009. The next prime is 105024055039. The reversal of 105024055021 is 120550420501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87337980900 + 17686074121 = 295530^2 + 132989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105024055021 is a prime.

It is a super-2 number, since 2×105024055021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105024058021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52512027510 + 52512027511.

It is an arithmetic number, because the mean of its divisors is an integer number (52512027511).

Almost surely, 2^105024055021 is an apocalyptic number.

It is an amenable number.

105024055021 is a deficient number, since it is larger than the sum of its proper divisors (1).

105024055021 is an equidigital number, since it uses as much as digits as its factorization.

105024055021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 105024055021 its reverse (120550420501), we get a palindrome (225574475522).

The spelling of 105024055021 in words is "one hundred five billion, twenty-four million, fifty-five thousand, twenty-one".