1022031221 has 8 divisors (see below), whose sum is σ = 1038740664. Its totient is φ = 1005451200.

The previous prime is 1022031209. The next prime is 1022031229. The reversal of 1022031221 is 1221302201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40462321 + 981568900 = 6361^2 + 31330^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022031221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022031196 and 1022031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022031229) 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, 16370 + ... + 48083.

It is an arithmetic number, because the mean of its divisors is an integer number (129842583).

Almost surely, 2^1022031221 is an apocalyptic number.

It is an amenable number.

1022031221 is a deficient number, since it is larger than the sum of its proper divisors (16709443).

1022031221 is a wasteful number, since it uses less digits than its factorization.

1022031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64711.

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

The square root of 1022031221 is about 31969.2230277810. The cubic root of 1022031221 is about 1007.2904603565.

Adding to 1022031221 its reverse (1221302201), we get a palindrome (2243333422).

The spelling of 1022031221 in words is "one billion, twenty-two million, thirty-one thousand, two hundred twenty-one".