14202031021 has 4 divisors (see below), whose sum is σ = 14203685500. Its totient is φ = 14200376544.

The previous prime is 14202030991. The next prime is 14202031033. The reversal of 14202031021 is 12013020241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12013020241 = 1283 ⋅9363227.

It can be written as a sum of positive squares in 2 ways, for example, as 12019833225 + 2182197796 = 109635^2 + 46714^2 .

It is a cyclic number.

It is not a de Polignac number, because 14202031021 - 2⁷ = 14202030893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14202030986 and 14202031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14202031321) 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, 814296 + ... + 831553.

It is an arithmetic number, because the mean of its divisors is an integer number (3550921375).

Almost surely, 2^14202031021 is an apocalyptic number.

It is an amenable number.

14202031021 is a deficient number, since it is larger than the sum of its proper divisors (1654479).

14202031021 is an equidigital number, since it uses as much as digits as its factorization.

14202031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654478.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 14202031021 its reverse (12013020241), we get a palindrome (26215051262).

The spelling of 14202031021 in words is "fourteen billion, two hundred two million, thirty-one thousand, twenty-one".