21113035401 has 16 divisors (see below), whose sum is σ = 28245136640. Its totient is φ = 14028215040.

The previous prime is 21113035397. The next prime is 21113035409. The reversal of 21113035401 is 10453031112.

It is not a de Polignac number, because 21113035401 - 2² = 21113035397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113035409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1318320 + ... + 1334238.

It is an arithmetic number, because the mean of its divisors is an integer number (1765321040).

Almost surely, 2^21113035401 is an apocalyptic number.

It is an amenable number.

21113035401 is a deficient number, since it is larger than the sum of its proper divisors (7132101239).

21113035401 is a wasteful number, since it uses less digits than its factorization.

21113035401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17376.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 21113035401 its reverse (10453031112), we get a palindrome (31566066513).

The spelling of 21113035401 in words is "twenty-one billion, one hundred thirteen million, thirty-five thousand, four hundred one".