1001401121 has 8 divisors (see below), whose sum is σ = 1144713600. Its totient is φ = 858152448.

The previous prime is 1001401081. The next prime is 1001401169. The reversal of 1001401121 is 1211041001.

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 1001401121 - 2¹⁸ = 1001138977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001401171) 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, 24545 + ... + 51041.

It is an arithmetic number, because the mean of its divisors is an integer number (143089200).

Almost surely, 2^1001401121 is an apocalyptic number.

It is an amenable number.

1001401121 is a deficient number, since it is larger than the sum of its proper divisors (143312479).

1001401121 is an equidigital number, since it uses as much as digits as its factorization.

1001401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31903.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1001401121 is about 31644.9225153104. The cubic root of 1001401121 is about 1000.4668223763.

Adding to 1001401121 its reverse (1211041001), we get a palindrome (2212442122).

The spelling of 1001401121 in words is "one billion, one million, four hundred one thousand, one hundred twenty-one".