21010120103011 has 8 divisors (see below), whose sum is σ = 22689309051360. Its totient is φ = 19339934849472.

The previous prime is 21010120103009. The next prime is 21010120103057. The reversal of 21010120103011 is 11030102101012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21010120103011 - 2¹ = 21010120103009 is a prime.

It is a super-2 number, since 2×21010120103011² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010120102982 and 21010120103000.

It is not an unprimeable number, because it can be changed into a prime (21010120103611) 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, 2250918850 + ... + 2250928183.

It is an arithmetic number, because the mean of its divisors is an integer number (2836163631420).

Almost surely, 2^{21010120103011} is an apocalyptic number.

21010120103011 is a deficient number, since it is larger than the sum of its proper divisors (1679188948349).

21010120103011 is a wasteful number, since it uses less digits than its factorization.

21010120103011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501847405.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21010120103011 its reverse (11030102101012), we get a palindrome (32040222204023).

The spelling of 21010120103011 in words is "twenty-one trillion, ten billion, one hundred twenty million, one hundred three thousand, eleven".