1334430021 has 32 divisors (see below), whose sum is σ = 1896693760. Its totient is φ = 832156416.

The previous prime is 1334430017. The next prime is 1334430029. The reversal of 1334430021 is 1200344331.

It is not a de Polignac number, because 1334430021 - 2² = 1334430017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1334430021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1334430029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2439270 + ... + 2439816.

It is an arithmetic number, because the mean of its divisors is an integer number (59271680).

Almost surely, 2^1334430021 is an apocalyptic number.

It is an amenable number.

1334430021 is a deficient number, since it is larger than the sum of its proper divisors (562263739).

1334430021 is a wasteful number, since it uses less digits than its factorization.

1334430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1334430021 is about 36529.8510946869. The cubic root of 1334430021 is about 1100.9440988413.

Adding to 1334430021 its reverse (1200344331), we get a palindrome (2534774352).

It can be divided in two parts, 13344 and 30021, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 1334430021 in words is "one billion, three hundred thirty-four million, four hundred thirty thousand, twenty-one".