16121023 has 8 divisors (see below), whose sum is σ = 16693376. Its totient is φ = 15552000.

The previous prime is 16120967. The next prime is 16121029. The reversal of 16121023 is 32012161.

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 16121023 - 2¹⁷ = 15989951 is a prime.

It is a super-4 number, since 4×16121023⁴ (a number of 30 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16120988 and 16121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12823 + ... + 14023.

It is an arithmetic number, because the mean of its divisors is an integer number (2086672).

Almost surely, 2^16121023 is an apocalyptic number.

16121023 is a deficient number, since it is larger than the sum of its proper divisors (572353).

16121023 is a wasteful number, since it uses less digits than its factorization.

16121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 16121023 is about 4015.0993761052. The cubic root of 16121023 is about 252.6179457472.

Adding to 16121023 its reverse (32012161), we get a palindrome (48133184).

The spelling of 16121023 in words is "sixteen million, one hundred twenty-one thousand, twenty-three".