14000001021 has 12 divisors (see below), whose sum is σ = 21286551520. Its totient is φ = 8842105800.

The previous prime is 14000000977. The next prime is 14000001049. The reversal of 14000001021 is 12010000041.

It is a happy number.

It is not a de Polignac number, because 14000001021 - 2⁶ = 14000000957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14000000994 and 14000001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14000001091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40935505 + ... + 40935846.

Almost surely, 2^14000001021 is an apocalyptic number.

It is an amenable number.

14000001021 is a deficient number, since it is larger than the sum of its proper divisors (7286550499).

14000001021 is a wasteful number, since it uses less digits than its factorization.

14000001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81871376 (or 81871373 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 14000001021 its reverse (12010000041), we get a palindrome (26010001062).

The spelling of 14000001021 in words is "fourteen billion, one thousand, twenty-one".