211221121013212 has 12 divisors (see below), whose sum is σ = 370490626814896. Its totient is φ = 105366656208960.

The previous prime is 211221121013209. The next prime is 211221121013249. The reversal of 211221121013212 is 212310121122112.

It is a super-2 number, since 2×211221121013212² (a number of 29 digits) contains 22 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, 60976072464 + ... + 60976075927.

Almost surely, 2^{211221121013212} is an apocalyptic number.

It is an amenable number.

211221121013212 is a deficient number, since it is larger than the sum of its proper divisors (159269505801684).

211221121013212 is a wasteful number, since it uses less digits than its factorization.

211221121013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121952148828 (or 121952148826 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 211221121013212 its reverse (212310121122112), we get a palindrome (423531242135324).

The spelling of 211221121013212 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, thirteen thousand, two hundred twelve".