21110211201101 has 12 divisors (see below), whose sum is σ = 23209136635356. Its totient is φ = 19186675643520.

The previous prime is 21110211201083. The next prime is 21110211201127. The reversal of 21110211201101 is 10110211201112.

It can be written as a sum of positive squares in 2 ways, for example, as 5601500829001 + 15508710372100 = 2366749^2 + 3938110^2 .

It is not a de Polignac number, because 21110211201101 - 2¹⁴ = 21110211184717 is a prime.

It is a super-2 number, since 2×21110211201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110211201901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19588730 + ... + 20638283.

It is an arithmetic number, because the mean of its divisors is an integer number (1934094719613).

Almost surely, 2^{21110211201101} is an apocalyptic number.

It is an amenable number.

21110211201101 is a deficient number, since it is larger than the sum of its proper divisors (2098925434255).

21110211201101 is a wasteful number, since it uses less digits than its factorization.

21110211201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40231372 (or 40231361 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21110211201101 its reverse (10110211201112), we get a palindrome (31220422402213).

It can be divided in two parts, 21110211 and 201101, that added together give a palindrome (21311312).

The spelling of 21110211201101 in words is "twenty-one trillion, one hundred ten billion, two hundred eleven million, two hundred one thousand, one hundred one".