1022220321 has 8 divisors (see below), whose sum is σ = 1371987264. Its totient is φ = 676966800.

The previous prime is 1022220313. The next prime is 1022220347. The reversal of 1022220321 is 1230222201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1022220321 - 2³ = 1022220313 is a prime.

It is a super-3 number, since 3×1022220321³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1022220321.

It is not an unprimeable number, because it can be changed into a prime (1022220361) 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, 1127826 + ... + 1128731.

It is an arithmetic number, because the mean of its divisors is an integer number (171498408).

Almost surely, 2^1022220321 is an apocalyptic number.

It is an amenable number.

1022220321 is a deficient number, since it is larger than the sum of its proper divisors (349766943).

1022220321 is a wasteful number, since it uses less digits than its factorization.

1022220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256711.

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

The square root of 1022220321 is about 31972.1804229865. The cubic root of 1022220321 is about 1007.3525807287.

Adding to 1022220321 its reverse (1230222201), we get a palindrome (2252442522).

The spelling of 1022220321 in words is "one billion, twenty-two million, two hundred twenty thousand, three hundred twenty-one".