1030212221 has 8 divisors (see below), whose sum is σ = 1043073624. Its totient is φ = 1017403200.

The previous prime is 1030212217. The next prime is 1030212229. The reversal of 1030212221 is 1222120301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 725709721 + 304502500 = 26939^2 + 17450^2 .

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 1030212221 - 2² = 1030212217 is a prime.

It is a super-2 number, since 2×1030212221² = 2122674440595505682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030212196 and 1030212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030212229) 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, 27251 + ... + 52943.

It is an arithmetic number, because the mean of its divisors is an integer number (130384203).

Almost surely, 2^1030212221 is an apocalyptic number.

It is an amenable number.

1030212221 is a deficient number, since it is larger than the sum of its proper divisors (12861403).

1030212221 is a wasteful number, since it uses less digits than its factorization.

1030212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26191.

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

The square root of 1030212221 is about 32096.9191823764. The cubic root of 1030212221 is about 1009.9709892657.

Adding to 1030212221 its reverse (1222120301), we get a palindrome (2252332522).

The spelling of 1030212221 in words is "one billion, thirty million, two hundred twelve thousand, two hundred twenty-one".