16122121001 has 8 divisors (see below), whose sum is σ = 18615233280. Its totient is φ = 13676496768.

The previous prime is 16122120979. The next prime is 16122121027. The reversal of 16122121001 is 10012122161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16122121001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16122121201) 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, 11871281 + ... + 11872638.

It is an arithmetic number, because the mean of its divisors is an integer number (2326904160).

Almost surely, 2^16122121001 is an apocalyptic number.

It is an amenable number.

16122121001 is a deficient number, since it is larger than the sum of its proper divisors (2493112279).

16122121001 is an equidigital number, since it uses as much as digits as its factorization.

16122121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23744023.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 16122121001 its reverse (10012122161), we get a palindrome (26134243162).

The spelling of 16122121001 in words is "sixteen billion, one hundred twenty-two million, one hundred twenty-one thousand, one".