211220012212 has 48 divisors (see below), whose sum is σ = 424516478400. Its totient is φ = 90944156160.

The previous prime is 211220012209. The next prime is 211220012219. The reversal of 211220012212 is 212210022112.

It is a happy number.

211220012212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211220012212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220012219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10246588 + ... + 10267180.

It is an arithmetic number, because the mean of its divisors is an integer number (8844093300).

Almost surely, 2^211220012212 is an apocalyptic number.

211220012212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211220012212 is an abundant number, since it is smaller than the sum of its proper divisors (213296466188).

211220012212 is a wasteful number, since it uses less digits than its factorization.

211220012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32896 (or 32894 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211220012212 its reverse (212210022112), we get a palindrome (423430034324).

The spelling of 211220012212 in words is "two hundred eleven billion, two hundred twenty million, twelve thousand, two hundred twelve".