1020223221 has 16 divisors (see below), whose sum is σ = 1456166400. Its totient is φ = 633428208.

The previous prime is 1020223199. The next prime is 1020223223. The reversal of 1020223221 is 1223220201.

It is a happy number.

It is not a de Polignac number, because 1020223221 - 2⁶ = 1020223157 is a prime.

It is a super-2 number, since 2×1020223221² = 2081710841335229682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020223223) 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, 148321 + ... + 155046.

It is an arithmetic number, because the mean of its divisors is an integer number (91010400).

Almost surely, 2^1020223221 is an apocalyptic number.

It is an amenable number.

1020223221 is a deficient number, since it is larger than the sum of its proper divisors (435943179).

1020223221 is a wasteful number, since it uses less digits than its factorization.

1020223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303448.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1020223221 is about 31940.9333144791. The cubic root of 1020223221 is about 1006.6961353570.

Adding to 1020223221 its reverse (1223220201), we get a palindrome (2243443422).

The spelling of 1020223221 in words is "one billion, twenty million, two hundred twenty-three thousand, two hundred twenty-one".