20210120021212 has 48 divisors (see below), whose sum is σ = 39229004975328. Its totient is φ = 9033803550720.

The previous prime is 20210120021207. The next prime is 20210120021261. The reversal of 20210120021212 is 21212002101202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14410393 + ... + 15750544.

It is an arithmetic number, because the mean of its divisors is an integer number (817270936986).

Almost surely, 2^{20210120021212} is an apocalyptic number.

20210120021212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20210120021212 is a deficient number, since it is larger than the sum of its proper divisors (19018884954116).

20210120021212 is a wasteful number, since it uses less digits than its factorization.

20210120021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30161206 (or 30161204 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20210120021212 its reverse (21212002101202), we get a palindrome (41422122122414).

The spelling of 20210120021212 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, twenty-one thousand, two hundred twelve".