106505501221 has 8 divisors (see below), whose sum is σ = 121726116800. Its totient is φ = 91286271648.

The previous prime is 106505501209. The next prime is 106505501251. The reversal of 106505501221 is 122105505601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 106505501221 - 2⁵ = 106505501189 is a prime.

It is a super-2 number, since 2×106505501221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106505501221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106505501251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176256 + ... + 494041.

It is an arithmetic number, because the mean of its divisors is an integer number (15215764600).

Almost surely, 2^106505501221 is an apocalyptic number.

It is an amenable number.

106505501221 is a deficient number, since it is larger than the sum of its proper divisors (15220615579).

106505501221 is an equidigital number, since it uses as much as digits as its factorization.

106505501221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693003.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 106505501221 in words is "one hundred six billion, five hundred five million, five hundred one thousand, two hundred twenty-one".