21110404111202 has 24 divisors (see below), whose sum is σ = 36862174351260. Its totient is φ = 9040764710880.

The previous prime is 21110404111201. The next prime is 21110404111327. The reversal of 21110404111202 is 20211140401112.

It can be written as a sum of positive squares in 2 ways, for example, as 21103375133281 + 7028977921 = 4593841^2 + 83839^2 .

It is not an unprimeable number, because it can be changed into a prime (21110404111201) 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, 77856077 + ... + 78126752.

Almost surely, 2^{21110404111202} is an apocalyptic number.

21110404111202 is a deficient number, since it is larger than the sum of its proper divisors (15751770240058).

21110404111202 is a wasteful number, since it uses less digits than its factorization.

21110404111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155984226 (or 155984219 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 21110404111202 its reverse (20211140401112), we get a palindrome (41321544512314).

The spelling of 21110404111202 in words is "twenty-one trillion, one hundred ten billion, four hundred four million, one hundred eleven thousand, two hundred two".