21111034041 has 24 divisors (see below), whose sum is σ = 31462404480. Its totient is φ = 13633659936.

The previous prime is 21111034033. The next prime is 21111034103. The reversal of 21111034041 is 14043011112.

21111034041 is a `hidden beast` number, since 211 + 110 + 340 + 4 + 1 = 666.

It is not a de Polignac number, because 21111034041 - 2³ = 21111034033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111034001) 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, 242431 + ... + 317796.

It is an arithmetic number, because the mean of its divisors is an integer number (1310933520).

Almost surely, 2^21111034041 is an apocalyptic number.

It is an amenable number.

21111034041 is a deficient number, since it is larger than the sum of its proper divisors (10351370439).

21111034041 is a wasteful number, since it uses less digits than its factorization.

21111034041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560365 (or 560362 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21111034041 its reverse (14043011112), we get a palindrome (35154045153).

The spelling of 21111034041 in words is "twenty-one billion, one hundred eleven million, thirty-four thousand, forty-one".