21202202101110 has 16 divisors (see below), whose sum is σ = 50885285042736. Its totient is φ = 5653920560288.

The previous prime is 21202202101109. The next prime is 21202202101111. The reversal of 21202202101110 is 1110120220212.

It is an interprime number because it is at equal distance from previous prime (21202202101109) and next prime (21202202101111).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21202202101110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202202101111) 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, 353370034989 + ... + 353370035048.

It is an arithmetic number, because the mean of its divisors is an integer number (3180330315171).

Almost surely, 2^{21202202101110} is an apocalyptic number.

21202202101110 is an abundant number, since it is smaller than the sum of its proper divisors (29683082941626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202202101110 is a wasteful number, since it uses less digits than its factorization.

21202202101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706740070047.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21202202101110 its reverse (1110120220212), we get a palindrome (22312322321322).

The spelling of 21202202101110 in words is "twenty-one trillion, two hundred two billion, two hundred two million, one hundred one thousand, one hundred ten".