20121096 has 16 divisors (see below), whose sum is σ = 50302800. Its totient is φ = 6707024.

The previous prime is 20121091. The next prime is 20121097. The reversal of 20121096 is 69012102.

It is not an unprimeable number, because it can be changed into a prime (20121091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419166 + ... + 419213.

It is an arithmetic number, because the mean of its divisors is an integer number (3143925).

Almost surely, 2^20121096 is an apocalyptic number.

It is an amenable number.

20121096 is an abundant number, since it is smaller than the sum of its proper divisors (30181704).

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

20121096 is a wasteful number, since it uses less digits than its factorization.

20121096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838388 (or 838384 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 20121096 is about 4485.6544672991. The cubic root of 20121096 is about 271.9885015324.

Adding to 20121096 its reverse (69012102), we get a palindrome (89133198).

The spelling of 20121096 in words is "twenty million, one hundred twenty-one thousand, ninety-six".