1001111421 has 8 divisors (see below), whose sum is σ = 1363215744. Its totient is φ = 653207360.

The previous prime is 1001111413. The next prime is 1001111459. The reversal of 1001111421 is 1241111001.

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 1001111421 - 2³ = 1001111413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001111397 and 1001111406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001111401) 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 7 ways as a sum of consecutive naturals, for example, 3549900 + ... + 3550181.

It is an arithmetic number, because the mean of its divisors is an integer number (170401968).

Almost surely, 2^1001111421 is an apocalyptic number.

It is an amenable number.

1001111421 is a deficient number, since it is larger than the sum of its proper divisors (362104323).

1001111421 is an equidigital number, since it uses as much as digits as its factorization.

1001111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100131.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1001111421 is about 31640.3448306114. The cubic root of 1001111421 is about 1000.3703365006.

Adding to 1001111421 its reverse (1241111001), we get a palindrome (2242222422).

The spelling of 1001111421 in words is "one billion, one million, one hundred eleven thousand, four hundred twenty-one".