212102213012 has 6 divisors (see below), whose sum is σ = 371178872778. Its totient is φ = 106051106504.

The previous prime is 212102213003. The next prime is 212102213051. The reversal of 212102213012 is 210312201212.

It can be written as a sum of positive squares in only one way, i.e., 142556084356 + 69546128656 = 377566^2 + 263716^2 .

It is a super-3 number, since 3×212102213012³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26512776623 + ... + 26512776630.

It is an arithmetic number, because the mean of its divisors is an integer number (61863145463).

Almost surely, 2^212102213012 is an apocalyptic number.

It is an amenable number.

212102213012 is a deficient number, since it is larger than the sum of its proper divisors (159076659766).

212102213012 is a wasteful number, since it uses less digits than its factorization.

212102213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53025553257 (or 53025553255 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212102213012 its reverse (210312201212), we get a palindrome (422414414224).

The spelling of 212102213012 in words is "two hundred twelve billion, one hundred two million, two hundred thirteen thousand, twelve".