21011120013011 has 32 divisors (see below), whose sum is σ = 22505621698560. Its totient is φ = 19580003904384.

The previous prime is 21011120012989. The next prime is 21011120013031. The reversal of 21011120013011 is 11031002111012.

It is a cyclic number.

It is not a de Polignac number, because 21011120013011 - 2¹⁴ = 21011119996627 is a prime.

It is a super-2 number, since 2×21011120013011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21011120013031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59291525 + ... + 59644841.

It is an arithmetic number, because the mean of its divisors is an integer number (703300678080).

Almost surely, 2^{21011120013011} is an apocalyptic number.

21011120013011 is a deficient number, since it is larger than the sum of its proper divisors (1494501685549).

21011120013011 is a wasteful number, since it uses less digits than its factorization.

21011120013011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353955.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21011120013011 its reverse (11031002111012), we get a palindrome (32042122124023).

The spelling of 21011120013011 in words is "twenty-one trillion, eleven billion, one hundred twenty million, thirteen thousand, eleven".