20011212110 has 16 divisors (see below), whose sum is σ = 37915981200. Its totient is φ = 7583196096.

The previous prime is 20011212083. The next prime is 20011212191. The reversal of 20011212110 is 1121211002.

It is a super-2 number, since 2×20011212110² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011212091 and 20011212100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52660895 + ... + 52661274.

It is an arithmetic number, because the mean of its divisors is an integer number (2369748825).

Almost surely, 2^20011212110 is an apocalyptic number.

20011212110 is a deficient number, since it is larger than the sum of its proper divisors (17904769090).

20011212110 is a wasteful number, since it uses less digits than its factorization.

20011212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105322195.

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

Adding to 20011212110 its reverse (1121211002), we get a palindrome (21132423112).

The spelling of 20011212110 in words is "twenty billion, eleven million, two hundred twelve thousand, one hundred ten".