21110221030113 has 12 divisors (see below), whose sum is σ = 30859921506960. Its totient is φ = 13903920677976.

The previous prime is 21110221030051. The next prime is 21110221030163. The reversal of 21110221030113 is 31103012201112.

21110221030113 is a `hidden beast` number, since 21 + 110 + 221 + 0 + 301 + 13 = 666.

It is not a de Polignac number, because 21110221030113 - 2¹³ = 21110221021921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110221030163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14129999943 + ... + 14130001436.

It is an arithmetic number, because the mean of its divisors is an integer number (2571660125580).

Almost surely, 2^{21110221030113} is an apocalyptic number.

It is an amenable number.

21110221030113 is a deficient number, since it is larger than the sum of its proper divisors (9749700476847).

21110221030113 is a wasteful number, since it uses less digits than its factorization.

21110221030113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28260001468 (or 28260001465 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21110221030113 its reverse (31103012201112), we get a palindrome (52213233231225).

The spelling of 21110221030113 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-one million, thirty thousand, one hundred thirteen".