16102121171021 has 8 divisors (see below), whose sum is σ = 16845406755840. Its totient is φ = 15362435032912.

The previous prime is 16102121170999. The next prime is 16102121171023. The reversal of 16102121171021 is 12017112120161.

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 16102121171021 - 2¹⁰ = 16102121169997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16102121171023) 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, 899852525 + ... + 899870418.

It is an arithmetic number, because the mean of its divisors is an integer number (2105675844480).

Almost surely, 2^{16102121171021} is an apocalyptic number.

It is an amenable number.

16102121171021 is a deficient number, since it is larger than the sum of its proper divisors (743285584819).

16102121171021 is a wasteful number, since it uses less digits than its factorization.

16102121171021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799723355.

The product of its (nonzero) digits is 336, while the sum is 26.

Adding to 16102121171021 its reverse (12017112120161), we get a palindrome (28119233291182).

The spelling of 16102121171021 in words is "sixteen trillion, one hundred two billion, one hundred twenty-one million, one hundred seventy-one thousand, twenty-one".