21133221300111 has 16 divisors (see below), whose sum is σ = 29663971424640. Its totient is φ = 13345808185440.

The previous prime is 21133221300109. The next prime is 21133221300119. The reversal of 21133221300111 is 11100312233112.

It is not a de Polignac number, because 21133221300111 - 2¹ = 21133221300109 is a prime.

It is a super-2 number, since 2×21133221300111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133221300119) 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, 20171820 + ... + 21193601.

It is an arithmetic number, because the mean of its divisors is an integer number (1853998214040).

Almost surely, 2^{21133221300111} is an apocalyptic number.

21133221300111 is a deficient number, since it is larger than the sum of its proper divisors (8530750124529).

21133221300111 is a wasteful number, since it uses less digits than its factorization.

21133221300111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41374406.

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

Adding to 21133221300111 its reverse (11100312233112), we get a palindrome (32233533533223).

The spelling of 21133221300111 in words is "twenty-one trillion, one hundred thirty-three billion, two hundred twenty-one million, three hundred thousand, one hundred eleven".