1010212221 has 32 divisors (see below), whose sum is σ = 1437078528. Its totient is φ = 630097920.

The previous prime is 1010212207. The next prime is 1010212237. The reversal of 1010212221 is 1222120101.

It is not a de Polignac number, because 1010212221 - 2¹³ = 1010204029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010212197 and 1010212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010213221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 594445 + ... + 596141.

It is an arithmetic number, because the mean of its divisors is an integer number (44908704).

Almost surely, 2^1010212221 is an apocalyptic number.

It is an amenable number.

1010212221 is a deficient number, since it is larger than the sum of its proper divisors (426866307).

1010212221 is a wasteful number, since it uses less digits than its factorization.

1010212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1010212221 is about 31783.8358446554. The cubic root of 1010212221 is about 1003.3925512473.

Adding to 1010212221 its reverse (1222120101), we get a palindrome (2232332322).

The spelling of 1010212221 in words is "one billion, ten million, two hundred twelve thousand, two hundred twenty-one".