16127022121 has 8 divisors (see below), whose sum is σ = 18552942464. Its totient is φ = 13731616800.

The previous prime is 16127022101. The next prime is 16127022127. The reversal of 16127022121 is 12122072161.

16127022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16127022121 - 2²¹ = 16124924969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16127022127) 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 7 ways as a sum of consecutive naturals, for example, 7627620 + ... + 7629733.

It is an arithmetic number, because the mean of its divisors is an integer number (2319117808).

Almost surely, 2^16127022121 is an apocalyptic number.

It is an amenable number.

16127022121 is a deficient number, since it is larger than the sum of its proper divisors (2425920343).

16127022121 is a wasteful number, since it uses less digits than its factorization.

16127022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15257511.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 16127022121 its reverse (12122072161), we get a palindrome (28249094282).

The spelling of 16127022121 in words is "sixteen billion, one hundred twenty-seven million, twenty-two thousand, one hundred twenty-one".