1010352221 has 4 divisors (see below), whose sum is σ = 1010446944. Its totient is φ = 1010257500.

The previous prime is 1010352173. The next prime is 1010352307. The reversal of 1010352221 is 1222530101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1222530101 = 13 ⋅94040777.

It is a cyclic number.

It is not a de Polignac number, because 1010352221 - 2⁶ = 1010352157 is a prime.

It is a super-2 number, since 2×1010352221² = 2041623220959265682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1010352221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010358221) 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, 28985 + ... + 53486.

It is an arithmetic number, because the mean of its divisors is an integer number (252611736).

Almost surely, 2^1010352221 is an apocalyptic number.

It is an amenable number.

1010352221 is a deficient number, since it is larger than the sum of its proper divisors (94723).

1010352221 is an equidigital number, since it uses as much as digits as its factorization.

1010352221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94722.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1010352221 is about 31786.0381457016. The cubic root of 1010352221 is about 1003.4389007389.

Adding to 1010352221 its reverse (1222530101), we get a palindrome (2232882322).

The spelling of 1010352221 in words is "one billion, ten million, three hundred fifty-two thousand, two hundred twenty-one".