21321230100113 has 16 divisors (see below), whose sum is σ = 22607968299264. Its totient is φ = 20038114272000.

The previous prime is 21321230100059. The next prime is 21321230100127. The reversal of 21321230100113 is 31100103212312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21321230100113 - 2¹⁸ = 21321229837969 is a prime.

It is a super-2 number, since 2×21321230100113² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21321230100133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122310131 + ... + 122484327.

It is an arithmetic number, because the mean of its divisors is an integer number (1412998018704).

Almost surely, 2^{21321230100113} is an apocalyptic number.

It is an amenable number.

21321230100113 is a deficient number, since it is larger than the sum of its proper divisors (1286738199151).

21321230100113 is a wasteful number, since it uses less digits than its factorization.

21321230100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184552.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21321230100113 its reverse (31100103212312), we get a palindrome (52421333312425).

The spelling of 21321230100113 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred thirty million, one hundred thousand, one hundred thirteen".