1023331221 has 24 divisors (see below), whose sum is σ = 1620197280. Its totient is φ = 617248800.

The previous prime is 1023331219. The next prime is 1023331229. The reversal of 1023331221 is 1221333201.

It is not a de Polignac number, because 1023331221 - 2¹ = 1023331219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023331194 and 1023331203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023331229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3606 + ... + 45383.

It is an arithmetic number, because the mean of its divisors is an integer number (67508220).

Almost surely, 2^1023331221 is an apocalyptic number.

1023331221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1023331221 is a deficient number, since it is larger than the sum of its proper divisors (596866059).

1023331221 is a wasteful number, since it uses less digits than its factorization.

1023331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49217 (or 49214 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1023331221 is about 31989.5486213857. The cubic root of 1023331221 is about 1007.7173627691.

Adding to 1023331221 its reverse (1221333201), we get a palindrome (2244664422).

The spelling of 1023331221 in words is "one billion, twenty-three million, three hundred thirty-one thousand, two hundred twenty-one".