20210212121110 has 48 divisors (see below), whose sum is σ = 40082325834096. Its totient is φ = 7276403600000.

The previous prime is 20210212121069. The next prime is 20210212121111. The reversal of 20210212121110 is 1112121201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210212121111) 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 23 ways as a sum of consecutive naturals, for example, 7883341 + ... + 10127560.

It is an arithmetic number, because the mean of its divisors is an integer number (835048454877).

Almost surely, 2^{20210212121110} is an apocalyptic number.

20210212121110 is a deficient number, since it is larger than the sum of its proper divisors (19872113712986).

20210212121110 is a wasteful number, since it uses less digits than its factorization.

20210212121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18011121 (or 18011020 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20210212121110 its reverse (1112121201202), we get a palindrome (21322333322312).

The spelling of 20210212121110 in words is "twenty trillion, two hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ten".