21241350111 has 16 divisors (see below), whose sum is σ = 30024021600. Its totient is φ = 13311802368.

The previous prime is 21241350107. The next prime is 21241350131. The reversal of 21241350111 is 11105314212.

It is not a de Polignac number, because 21241350111 - 2² = 21241350107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241350101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208926 + ... + 293483.

It is an arithmetic number, because the mean of its divisors is an integer number (1876501350).

Almost surely, 2^21241350111 is an apocalyptic number.

21241350111 is a deficient number, since it is larger than the sum of its proper divisors (8782671489).

21241350111 is a wasteful number, since it uses less digits than its factorization.

21241350111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503258.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 21241350111 its reverse (11105314212), we get a palindrome (32346664323).

The spelling of 21241350111 in words is "twenty-one billion, two hundred forty-one million, three hundred fifty thousand, one hundred eleven".