2102020121212 has 96 divisors (see below), whose sum is σ = 4140998769600. Its totient is φ = 925498828800.

The previous prime is 2102020121177. The next prime is 2102020121219. The reversal of 2102020121212 is 2121210202012.

It is a happy number.

It is a super-2 number, since 2×2102020121212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102020121219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71412114 + ... + 71441542.

It is an arithmetic number, because the mean of its divisors is an integer number (43135403850).

Almost surely, 2^{2102020121212} is an apocalyptic number.

2102020121212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2102020121212 is a deficient number, since it is larger than the sum of its proper divisors (2038978648388).

2102020121212 is a wasteful number, since it uses less digits than its factorization.

2102020121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29887 (or 29885 counting only the distinct ones).

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

Adding to 2102020121212 its reverse (2121210202012), we get a palindrome (4223230323224).

The spelling of 2102020121212 in words is "two trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, two hundred twelve".