105401220281 has 4 divisors (see below), whose sum is σ = 120458537472. Its totient is φ = 90343903092.

The previous prime is 105401220251. The next prime is 105401220313. The reversal of 105401220281 is 182022104501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105401220281 - 2³⁰ = 104327478457 is a prime.

It is a super-2 number, since 2×105401220281² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105401220281.

It is not an unprimeable number, because it can be changed into a prime (105401220251) 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, 7528658585 + ... + 7528658598.

It is an arithmetic number, because the mean of its divisors is an integer number (30114634368).

Almost surely, 2^105401220281 is an apocalyptic number.

It is an amenable number.

105401220281 is a deficient number, since it is larger than the sum of its proper divisors (15057317191).

105401220281 is an equidigital number, since it uses as much as digits as its factorization.

105401220281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15057317190.

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 105401220281 its reverse (182022104501), we get a palindrome (287423324782).

The spelling of 105401220281 in words is "one hundred five billion, four hundred one million, two hundred twenty thousand, two hundred eighty-one".