20201121121092 has 96 divisors (see below), whose sum is σ = 49787164893312. Its totient is φ = 6366864301056.

The previous prime is 20201121121091. The next prime is 20201121121183. The reversal of 20201121121092 is 29012112110202.

It is not an unprimeable number, because it can be changed into a prime (20201121121091) 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 31 ways as a sum of consecutive naturals, for example, 1075608 + ... + 6446640.

It is an arithmetic number, because the mean of its divisors is an integer number (518616300972).

Almost surely, 2^{20201121121092} is an apocalyptic number.

It is an amenable number.

20201121121092 is an abundant number, since it is smaller than the sum of its proper divisors (29586043772220).

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

20201121121092 is a wasteful number, since it uses less digits than its factorization.

20201121121092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371317 (or 5371315 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 20201121121092 its reverse (29012112110202), we get a palindrome (49213233231294).

The spelling of 20201121121092 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, ninety-two".