20201121110 has 16 divisors (see below), whose sum is σ = 36395305776. Its totient is φ = 8073051168.

The previous prime is 20201121103. The next prime is 20201121113. The reversal of 20201121110 is 1112110202.

It is a junction number, because it is equal to n+sod(n) for n = 20201121091 and 20201121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201121113) 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, 913184 + ... + 935043.

It is an arithmetic number, because the mean of its divisors is an integer number (2274706611).

Almost surely, 2^20201121110 is an apocalyptic number.

20201121110 is a deficient number, since it is larger than the sum of its proper divisors (16194184666).

20201121110 is a wasteful number, since it uses less digits than its factorization.

20201121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849327.

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

Adding to 20201121110 its reverse (1112110202), we get a palindrome (21313231312).

The spelling of 20201121110 in words is "twenty billion, two hundred one million, one hundred twenty-one thousand, one hundred ten".