211020021012212 has 24 divisors (see below), whose sum is σ = 370219053073800. Its totient is φ = 105243192078336.

The previous prime is 211020021012193. The next prime is 211020021012301. The reversal of 211020021012212 is 212210120020112.

It can be written as a sum of positive squares in 4 ways, for example, as 73219750377316 + 137800270634896 = 8556854^2 + 11738836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14067668 + ... + 24898580.

It is an arithmetic number, because the mean of its divisors is an integer number (15425793878075).

Almost surely, 2^{211020021012212} is an apocalyptic number.

It is an amenable number.

211020021012212 is a deficient number, since it is larger than the sum of its proper divisors (159199032061588).

211020021012212 is a wasteful number, since it uses less digits than its factorization.

211020021012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10843235 (or 10843233 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211020021012212 its reverse (212210120020112), we get a palindrome (423230141032324).

The spelling of 211020021012212 in words is "two hundred eleven trillion, twenty billion, twenty-one million, twelve thousand, two hundred twelve".