1023012221 has 16 divisors (see below), whose sum is σ = 1276508160. Its totient is φ = 796487280.

The previous prime is 1023012203. The next prime is 1023012227. The reversal of 1023012221 is 1222103201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1023012221 - 2¹⁴ = 1022995837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023012196 and 1023012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023012227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100400 + ... + 110118.

It is an arithmetic number, because the mean of its divisors is an integer number (79781760).

Almost surely, 2^1023012221 is an apocalyptic number.

1023012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1023012221 is a deficient number, since it is larger than the sum of its proper divisors (253495939).

1023012221 is a wasteful number, since it uses less digits than its factorization.

1023012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11104.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1023012221 is about 31984.5622293006. The cubic root of 1023012221 is about 1007.6126409740.

Adding to 1023012221 its reverse (1222103201), we get a palindrome (2245115422).

The spelling of 1023012221 in words is "one billion, twenty-three million, twelve thousand, two hundred twenty-one".