21214035606131 has 4 divisors (see below), whose sum is σ = 21216548232792. Its totient is φ = 21211522979472.

The previous prime is 21214035606109. The next prime is 21214035606151. The reversal of 21214035606131 is 13160653041212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21214035606131 is a prime.

It is a super-2 number, since 2×21214035606131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21214035606091 and 21214035606100.

It is not an unprimeable number, because it can be changed into a prime (21214035606151) 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, 1256300666 + ... + 1256317551.

It is an arithmetic number, because the mean of its divisors is an integer number (5304137058198).

Almost surely, 2^{21214035606131} is an apocalyptic number.

21214035606131 is a deficient number, since it is larger than the sum of its proper divisors (2512626661).

21214035606131 is an equidigital number, since it uses as much as digits as its factorization.

21214035606131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512626660.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 21214035606131 its reverse (13160653041212), we get a palindrome (34374688647343).

The spelling of 21214035606131 in words is "twenty-one trillion, two hundred fourteen billion, thirty-five million, six hundred six thousand, one hundred thirty-one".