1040221401 has 4 divisors (see below), whose sum is σ = 1386961872. Its totient is φ = 693480932.

The previous prime is 1040221397. The next prime is 1040221417. The reversal of 1040221401 is 1041220401.

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.

It is a cyclic number.

It is not a de Polignac number, because 1040221401 - 2² = 1040221397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1040221201) 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, 173370231 + ... + 173370236.

It is an arithmetic number, because the mean of its divisors is an integer number (346740468).

Almost surely, 2^1040221401 is an apocalyptic number.

It is an amenable number.

1040221401 is a deficient number, since it is larger than the sum of its proper divisors (346740471).

1040221401 is an equidigital number, since it uses as much as digits as its factorization.

1040221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346740470.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1040221401 is about 32252.4634873059. The cubic root of 1040221401 is about 1013.2312943937.

Adding to 1040221401 its reverse (1041220401), we get a palindrome (2081441802).

The spelling of 1040221401 in words is "one billion, forty million, two hundred twenty-one thousand, four hundred one".