211212221110012 has 12 divisors (see below), whose sum is σ = 373774436234640. Its totient is φ = 104419525042976.

The previous prime is 211212221109997. The next prime is 211212221110031. The reversal of 211212221110012 is 210011122212112.

It is a happy number.

It is a super-2 number, since 2×211212221110012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296646377608 + ... + 296646378319.

It is an arithmetic number, because the mean of its divisors is an integer number (31147869686220).

Almost surely, 2^{211212221110012} is an apocalyptic number.

It is an amenable number.

211212221110012 is a deficient number, since it is larger than the sum of its proper divisors (162562215124628).

211212221110012 is a wasteful number, since it uses less digits than its factorization.

211212221110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593292756020 (or 593292756018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211212221110012 its reverse (210011122212112), we get a palindrome (421223343322124).

The spelling of 211212221110012 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, twelve".