10331121221 has 8 divisors (see below), whose sum is σ = 10947409920. Its totient is φ = 9715785408.

The previous prime is 10331121217. The next prime is 10331121239. The reversal of 10331121221 is 12212113301.

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 10331121221 - 2² = 10331121217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10331121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10331121271) 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, 215831 + ... + 259316.

It is an arithmetic number, because the mean of its divisors is an integer number (1368426240).

Almost surely, 2^10331121221 is an apocalyptic number.

It is an amenable number.

10331121221 is a deficient number, since it is larger than the sum of its proper divisors (616288699).

10331121221 is a wasteful number, since it uses less digits than its factorization.

10331121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476443.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10331121221 its reverse (12212113301), we get a palindrome (22543234522).

The spelling of 10331121221 in words is "ten billion, three hundred thirty-one million, one hundred twenty-one thousand, two hundred twenty-one".