104221661051 has 4 divisors (see below), whose sum is σ = 105649355112. Its totient is φ = 102793966992.

The previous prime is 104221661023. The next prime is 104221661059. The reversal of 104221661051 is 150166122401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150166122401 = 1597 ⋅94030133.

It is a cyclic number.

It is not a de Polignac number, because 104221661051 - 2²² = 104217466747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104221661059) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 713846921 + ... + 713847066.

It is an arithmetic number, because the mean of its divisors is an integer number (26412338778).

Almost surely, 2^104221661051 is an apocalyptic number.

104221661051 is a deficient number, since it is larger than the sum of its proper divisors (1427694061).

104221661051 is an equidigital number, since it uses as much as digits as its factorization.

104221661051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427694060.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 104221661051 its reverse (150166122401), we get a palindrome (254387783452).

The spelling of 104221661051 in words is "one hundred four billion, two hundred twenty-one million, six hundred sixty-one thousand, fifty-one".