1031221012209 has 8 divisors (see below), whose sum is σ = 1434742277952. Its totient is φ = 657590210640.

The previous prime is 1031221012187. The next prime is 1031221012267. The reversal of 1031221012209 is 9022101221301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1031221012209 - 2⁵ = 1031221012177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031221012309) 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, 7472615962 + ... + 7472616099.

It is an arithmetic number, because the mean of its divisors is an integer number (179342784744).

Almost surely, 2^{1031221012209} is an apocalyptic number.

It is an amenable number.

1031221012209 is a deficient number, since it is larger than the sum of its proper divisors (403521265743).

1031221012209 is a wasteful number, since it uses less digits than its factorization.

1031221012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14945232087.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 1031221012209 in words is "one trillion, thirty-one billion, two hundred twenty-one million, twelve thousand, two hundred nine".