21410302121 has 16 divisors (see below), whose sum is σ = 23879536128. Its totient is φ = 19070385600.

The previous prime is 21410302103. The next prime is 21410302127. The reversal of 21410302121 is 12120301412.

It is a cyclic number.

It is not a de Polignac number, because 21410302121 - 2¹⁴ = 21410285737 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 21410302121.

It is not an unprimeable number, because it can be changed into a prime (21410302127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203390 + ... + 290151.

It is an arithmetic number, because the mean of its divisors is an integer number (1492471008).

Almost surely, 2^21410302121 is an apocalyptic number.

It is an amenable number.

21410302121 is a deficient number, since it is larger than the sum of its proper divisors (2469234007).

21410302121 is a wasteful number, since it uses less digits than its factorization.

21410302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493672.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21410302121 its reverse (12120301412), we get a palindrome (33530603533).

The spelling of 21410302121 in words is "twenty-one billion, four hundred ten million, three hundred two thousand, one hundred twenty-one".