21111367941 has 48 divisors (see below), whose sum is σ = 32974096896. Its totient is φ = 12966041088.

The previous prime is 21111367891. The next prime is 21111367957. The reversal of 21111367941 is 14976311112.

It is not a de Polignac number, because 21111367941 - 2⁹ = 21111367429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21111367896 and 21111367905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111367141) 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 47 ways as a sum of consecutive naturals, for example, 3751656 + ... + 3757278.

It is an arithmetic number, because the mean of its divisors is an integer number (686960352).

Almost surely, 2^21111367941 is an apocalyptic number.

It is an amenable number.

21111367941 is a deficient number, since it is larger than the sum of its proper divisors (11862728955).

21111367941 is a wasteful number, since it uses less digits than its factorization.

21111367941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162 (or 6159 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The spelling of 21111367941 in words is "twenty-one billion, one hundred eleven million, three hundred sixty-seven thousand, nine hundred forty-one".