80211121 has 4 divisors (see below), whose sum is σ = 80274544. Its totient is φ = 80147700.

The previous prime is 80211119. The next prime is 80211139. The reversal of 80211121 is 12111208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80211121 - 2¹ = 80211119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80211095 and 80211104.

It is not an unprimeable number, because it can be changed into a prime (80211221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29775 + ... + 32356.

It is an arithmetic number, because the mean of its divisors is an integer number (20068636).

Almost surely, 2^80211121 is an apocalyptic number.

It is an amenable number.

80211121 is a deficient number, since it is larger than the sum of its proper divisors (63423).

80211121 is a wasteful number, since it uses less digits than its factorization.

80211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63422.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 80211121 is about 8956.0661565221. The cubic root of 80211121 is about 431.2656437369.

Adding to 80211121 its reverse (12111208), we get a palindrome (92322329).

The spelling of 80211121 in words is "eighty million, two hundred eleven thousand, one hundred twenty-one".