21120201110 has 32 divisors (see below), whose sum is σ = 39254326272. Its totient is φ = 8173139040.

The previous prime is 21120201101. The next prime is 21120201119. The reversal of 21120201110 is 1110202112.

It is an interprime number because it is at equal distance from previous prime (21120201101) and next prime (21120201119).

It is a junction number, because it is equal to n+sod(n) for n = 21120201091 and 21120201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120201119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319777 + ... + 1335683.

It is an arithmetic number, because the mean of its divisors is an integer number (1226697696).

Almost surely, 2^21120201110 is an apocalyptic number.

21120201110 is a deficient number, since it is larger than the sum of its proper divisors (18134125162).

21120201110 is a wasteful number, since it uses less digits than its factorization.

21120201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20228.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21120201110 its reverse (1110202112), we get a palindrome (22230403222).

The spelling of 21120201110 in words is "twenty-one billion, one hundred twenty million, two hundred one thousand, one hundred ten".