1001222141 has 4 divisors (see below), whose sum is σ = 1002359484. Its totient is φ = 1000084800.

The previous prime is 1001222137. The next prime is 1001222161. The reversal of 1001222141 is 1412221001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100922116 + 900300025 = 10046^2 + 30005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001222141 - 2² = 1001222137 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 (1001222161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567350 + ... + 569111.

It is an arithmetic number, because the mean of its divisors is an integer number (250589871).

Almost surely, 2^1001222141 is an apocalyptic number.

It is an amenable number.

1001222141 is a deficient number, since it is larger than the sum of its proper divisors (1137343).

1001222141 is an equidigital number, since it uses as much as digits as its factorization.

1001222141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137342.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1001222141 is about 31642.0944471127. The cubic root of 1001222141 is about 1000.4072144872.

Adding to 1001222141 its reverse (1412221001), we get a palindrome (2413443142).

The spelling of 1001222141 in words is "one billion, one million, two hundred twenty-two thousand, one hundred forty-one".