212121020121212 has 24 divisors (see below), whose sum is σ = 375132014754672. Its totient is φ = 104941816272000.

The previous prime is 212121020121203. The next prime is 212121020121239.

212121020121212 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×212121020121212³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170855033 + ... + 172092080.

It is an arithmetic number, because the mean of its divisors is an integer number (15630500614778).

Almost surely, 2^{212121020121212} is an apocalyptic number.

It is an amenable number.

212121020121212 is a deficient number, since it is larger than the sum of its proper divisors (163010994633460).

212121020121212 is a wasteful number, since it uses less digits than its factorization.

212121020121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342948749 (or 342948747 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 212121020121212 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, two hundred twelve".