212120212021012 has 12 divisors (see below), whose sum is σ = 371242902040416. Its totient is φ = 106050811438040.

The previous prime is 212120212021001. The next prime is 212120212021043. The reversal of 212120212021012 is 210120212021212.

It is a super-4 number, since 4×212120212021012⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323591768 + ... + 2323683055.

It is an arithmetic number, because the mean of its divisors is an integer number (30936908503368).

Almost surely, 2^{212120212021012} is an apocalyptic number.

It is an amenable number.

212120212021012 is a deficient number, since it is larger than the sum of its proper divisors (159122690019404).

212120212021012 is a wasteful number, since it uses less digits than its factorization.

212120212021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647286238 (or 4647286236 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212120212021012 its reverse (210120212021212), we get a palindrome (422240424042224).

The spelling of 212120212021012 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred twelve million, twenty-one thousand, twelve".