20211121101120 has 56 divisors (see below), whose sum is σ = 64170309499104. Its totient is φ = 5389632293376.

The previous prime is 20211121101029. The next prime is 20211121101121. The reversal of 20211121101120 is 2110112111202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20211121101120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211121101121) by changing a digit.

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, 10526624614 + ... + 10526626533.

Almost surely, 2^{20211121101120} is an apocalyptic number.

20211121101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211121101120 is an abundant number, since it is smaller than the sum of its proper divisors (43959188397984).

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

20211121101120 is a wasteful number, since it uses less digits than its factorization.

20211121101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21053251167 (or 21053251157 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20211121101120 its reverse (2110112111202), we get a palindrome (22321233212322).

The spelling of 20211121101120 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty".