1022123221 has 8 divisors (see below), whose sum is σ = 1229622080. Its totient is φ = 829994688.

The previous prime is 1022123173. The next prime is 1022123231. The reversal of 1022123221 is 1223212201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1022123221 - 2⁹ = 1022122709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022123195 and 1022123204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022123231) 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, 3842436 + ... + 3842701.

It is an arithmetic number, because the mean of its divisors is an integer number (153702760).

Almost surely, 2^1022123221 is an apocalyptic number.

It is an amenable number.

1022123221 is a deficient number, since it is larger than the sum of its proper divisors (207498859).

1022123221 is an equidigital number, since it uses as much as digits as its factorization.

1022123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685163.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1022123221 is about 31970.6618792918. The cubic root of 1022123221 is about 1007.3206838108.

Adding to 1022123221 its reverse (1223212201), we get a palindrome (2245335422).

The spelling of 1022123221 in words is "one billion, twenty-two million, one hundred twenty-three thousand, two hundred twenty-one".