16100121 has 8 divisors (see below), whose sum is σ = 21738880. Its totient is φ = 10597392.

The previous prime is 16100101. The next prime is 16100137. The reversal of 16100121 is 12100161.

It is a happy number.

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

It is not a de Polignac number, because 16100121 - 2⁵ = 16100089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16100097 and 16100106.

It is not an unprimeable number, because it can be changed into a prime (16100101) 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, 33730 + ... + 34203.

It is an arithmetic number, because the mean of its divisors is an integer number (2717360).

Almost surely, 2^16100121 is an apocalyptic number.

It is an amenable number.

16100121 is a deficient number, since it is larger than the sum of its proper divisors (5638759).

16100121 is an equidigital number, since it uses as much as digits as its factorization.

16100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68015.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 16100121 is about 4012.4956074742. The cubic root of 16100121 is about 252.5087197590.

Adding to 16100121 its reverse (12100161), we get a palindrome (28200282).

The spelling of 16100121 in words is "sixteen million, one hundred thousand, one hundred twenty-one".