13214040121 has 6 divisors (see below), whose sum is σ = 13232961722. Its totient is φ = 13195145520.

The previous prime is 13214040107. The next prime is 13214040127. The reversal of 13214040121 is 12104041231.

It can be written as a sum of positive squares in only one way, i.e., 12580762896 + 633277225 = 112164^2 + 25165^2 .

It is not a de Polignac number, because 13214040121 - 2⁵ = 13214040089 is a prime.

It is a super-2 number, since 2×13214040121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13214040127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504181 + ... + 529741.

Almost surely, 2^13214040121 is an apocalyptic number.

It is an amenable number.

13214040121 is a deficient number, since it is larger than the sum of its proper divisors (18921601).

13214040121 is an frugal number, since it uses more digits than its factorization.

13214040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26999 (or 26280 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 13214040121 its reverse (12104041231), we get a palindrome (25318081352).

The spelling of 13214040121 in words is "thirteen billion, two hundred fourteen million, forty thousand, one hundred twenty-one".