105455412221 has 16 divisors (see below), whose sum is σ = 111610920960. Its totient is φ = 99481480560.

The previous prime is 105455412211. The next prime is 105455412263. The reversal of 105455412221 is 122214554501.

It is a cyclic number.

It is not a de Polignac number, because 105455412221 - 2²⁶ = 105388303357 is a prime.

It is a super-2 number, since 2×105455412221² (a number of 23 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 (105455412211) 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, 591860 + ... + 749138.

It is an arithmetic number, because the mean of its divisors is an integer number (6975682560).

Almost surely, 2^105455412221 is an apocalyptic number.

It is an amenable number.

105455412221 is a deficient number, since it is larger than the sum of its proper divisors (6155508739).

105455412221 is a wasteful number, since it uses less digits than its factorization.

105455412221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157856.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 105455412221 its reverse (122214554501), we get a palindrome (227669966722).

The spelling of 105455412221 in words is "one hundred five billion, four hundred fifty-five million, four hundred twelve thousand, two hundred twenty-one".