1010222221 has 4 divisors (see below), whose sum is σ = 1045057500. Its totient is φ = 975386944.

The previous prime is 1010222201. The next prime is 1010222231. The reversal of 1010222221 is 1222220101.

It is a happy number.

1010222221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1222220101 = 47 ⋅26004683.

It can be written as a sum of positive squares in 2 ways, for example, as 372104100 + 638118121 = 19290^2 + 25261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010222221 - 2¹⁹ = 1009697933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010222201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17417596 + ... + 17417653.

It is an arithmetic number, because the mean of its divisors is an integer number (261264375).

Almost surely, 2^1010222221 is an apocalyptic number.

It is an amenable number.

1010222221 is a deficient number, since it is larger than the sum of its proper divisors (34835279).

1010222221 is an equidigital number, since it uses as much as digits as its factorization.

1010222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34835278.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1010222221 is about 31783.9931569336. The cubic root of 1010222221 is about 1003.3958620673.

Adding to 1010222221 its reverse (1222220101), we get a palindrome (2232442322).

It can be divided in two parts, 10102 and 22221, that added together give a palindrome (32323).

The spelling of 1010222221 in words is "one billion, ten million, two hundred twenty-two thousand, two hundred twenty-one".