80201229521 has 4 divisors (see below), whose sum is σ = 91658548032. Its totient is φ = 68743911012.

The previous prime is 80201229499. The next prime is 80201229541. The reversal of 80201229521 is 12592210208.

It is a happy number.

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 de Polignac number, because none of the positive numbers 2^k-80201229521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80201229541) 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, 5728659245 + ... + 5728659258.

It is an arithmetic number, because the mean of its divisors is an integer number (22914637008).

Almost surely, 2^80201229521 is an apocalyptic number.

It is an amenable number.

80201229521 is a deficient number, since it is larger than the sum of its proper divisors (11457318511).

80201229521 is a wasteful number, since it uses less digits than its factorization.

80201229521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11457318510.

The product of its (nonzero) digits is 5760, while the sum is 32.

Adding to 80201229521 its reverse (12592210208), we get a palindrome (92793439729).

The spelling of 80201229521 in words is "eighty billion, two hundred one million, two hundred twenty-nine thousand, five hundred twenty-one".