21013233120111 has 8 divisors (see below), whose sum is σ = 28921439133184. Its totient is φ = 13556924593560.

The previous prime is 21013233120079. The next prime is 21013233120127. The reversal of 21013233120111 is 11102133231012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21013233120111 - 2⁵ = 21013233120079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013233120151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112974371521 + ... + 112974371706.

It is an arithmetic number, because the mean of its divisors is an integer number (3615179891648).

Almost surely, 2^{21013233120111} is an apocalyptic number.

21013233120111 is a deficient number, since it is larger than the sum of its proper divisors (7908206013073).

21013233120111 is a wasteful number, since it uses less digits than its factorization.

21013233120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225948743261.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21013233120111 its reverse (11102133231012), we get a palindrome (32115366351123).

The spelling of 21013233120111 in words is "twenty-one trillion, thirteen billion, two hundred thirty-three million, one hundred twenty thousand, one hundred eleven".