20201212211120 has 20 divisors (see below), whose sum is σ = 46967818391040. Its totient is φ = 8080484884416.

The previous prime is 20201212211083. The next prime is 20201212211149. The reversal of 20201212211120 is 2111221210202.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126257576240 + ... + 126257576399.

It is an arithmetic number, because the mean of its divisors is an integer number (2348390919552).

Almost surely, 2^{20201212211120} is an apocalyptic number.

20201212211120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201212211120 is an abundant number, since it is smaller than the sum of its proper divisors (26766606179920).

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

20201212211120 is a wasteful number, since it uses less digits than its factorization.

20201212211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252515152652 (or 252515152646 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20201212211120 its reverse (2111221210202), we get a palindrome (22312433421322).

The spelling of 20201212211120 in words is "twenty trillion, two hundred one billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty".