1023221222 has 4 divisors (see below), whose sum is σ = 1534831836. Its totient is φ = 511610610.

The previous prime is 1023221209. The next prime is 1023221267. The reversal of 1023221222 is 2221223201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221223201 = 353 ⋅6292417.

It is a self number, because there is not a number n which added to its sum of digits gives 1023221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255805304 + ... + 255805307.

It is an arithmetic number, because the mean of its divisors is an integer number (383707959).

Almost surely, 2^1023221222 is an apocalyptic number.

1023221222 is a deficient number, since it is larger than the sum of its proper divisors (511610614).

1023221222 is an equidigital number, since it uses as much as digits as its factorization.

1023221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511610613.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1023221222 is about 31987.8292792743. The cubic root of 1023221222 is about 1007.6812545923.

Adding to 1023221222 its reverse (2221223201), we get a palindrome (3244444423).

The spelling of 1023221222 in words is "one billion, twenty-three million, two hundred twenty-one thousand, two hundred twenty-two".