21111104014 has 48 divisors (see below), whose sum is σ = 42839614944. Its totient is φ = 7592397120.

The previous prime is 21111104009. The next prime is 21111104017. The reversal of 21111104014 is 41040111112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111104017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457297 + ... + 501340.

It is an arithmetic number, because the mean of its divisors is an integer number (892491978).

Almost surely, 2^21111104014 is an apocalyptic number.

21111104014 is an abundant number, since it is smaller than the sum of its proper divisors (21728510930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21111104014 is a wasteful number, since it uses less digits than its factorization.

21111104014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958681 (or 958670 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21111104014 its reverse (41040111112), we get a palindrome (62151215126).

The spelling of 21111104014 in words is "twenty-one billion, one hundred eleven million, one hundred four thousand, fourteen".