105420122254 has 16 divisors (see below), whose sum is σ = 171515667456. Its totient is φ = 48399481600.

The previous prime is 105420122219. The next prime is 105420122309. The reversal of 105420122254 is 452221024501.

It is a happy number.

It is a super-2 number, since 2×105420122254² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37810702 + ... + 37813489.

It is an arithmetic number, because the mean of its divisors is an integer number (10719729216).

Almost surely, 2^105420122254 is an apocalyptic number.

105420122254 is a deficient number, since it is larger than the sum of its proper divisors (66095545202).

105420122254 is a wasteful number, since it uses less digits than its factorization.

105420122254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75624251.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 105420122254 its reverse (452221024501), we get a palindrome (557641146755).

The spelling of 105420122254 in words is "one hundred five billion, four hundred twenty million, one hundred twenty-two thousand, two hundred fifty-four".