12201550021 has 8 divisors (see below), whose sum is σ = 12500647488. Its totient is φ = 11902524000.

The previous prime is 12201550001. The next prime is 12201550027. The reversal of 12201550021 is 12005510221.

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 12201550021 - 2⁹ = 12201549509 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 (12201550027) 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, 533736 + ... + 556126.

It is an arithmetic number, because the mean of its divisors is an integer number (1562580936).

Almost surely, 2^12201550021 is an apocalyptic number.

It is an amenable number.

12201550021 is a deficient number, since it is larger than the sum of its proper divisors (299097467).

12201550021 is a wasteful number, since it uses less digits than its factorization.

12201550021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35723.

The product of its (nonzero) digits is 200, while the sum is 19.

The spelling of 12201550021 in words is "twelve billion, two hundred one million, five hundred fifty thousand, twenty-one".