2101020121212 has 24 divisors (see below), whose sum is σ = 4949976210816. Its totient is φ = 693540622128.

The previous prime is 2101020121199. The next prime is 2101020121217. The reversal of 2101020121212 is 2121210201012.

It is a junction number, because it is equal to n+sod(n) for n = 2101020121191 and 2101020121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101020121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849925998 + ... + 849928469.

It is an arithmetic number, because the mean of its divisors is an integer number (206249008784).

Almost surely, 2^{2101020121212} is an apocalyptic number.

It is an amenable number.

2101020121212 is an abundant number, since it is smaller than the sum of its proper divisors (2848956089604).

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

2101020121212 is a wasteful number, since it uses less digits than its factorization.

2101020121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699854577 (or 1699854575 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2101020121212 its reverse (2121210201012), we get a palindrome (4222230322224).

The spelling of 2101020121212 in words is "two trillion, one hundred one billion, twenty million, one hundred twenty-one thousand, two hundred twelve".