21113120301 has 64 divisors (see below), whose sum is σ = 37677040128. Its totient is φ = 10198130688.

The previous prime is 21113120291. The next prime is 21113120309. The reversal of 21113120301 is 10302131112.

It is a happy number.

It is not a de Polignac number, because 21113120301 - 2¹⁷ = 21112989229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113120309) 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 63 ways as a sum of consecutive naturals, for example, 110241 + ... + 233193.

It is an arithmetic number, because the mean of its divisors is an integer number (588703752).

Almost surely, 2^21113120301 is an apocalyptic number.

21113120301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21113120301 is a deficient number, since it is larger than the sum of its proper divisors (16563919827).

21113120301 is a wasteful number, since it uses less digits than its factorization.

21113120301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123030.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21113120301 its reverse (10302131112), we get a palindrome (31415251413).

The spelling of 21113120301 in words is "twenty-one billion, one hundred thirteen million, one hundred twenty thousand, three hundred one".