211222020212 has 48 divisors (see below), whose sum is σ = 424742693760. Its totient is φ = 90031492992.

The previous prime is 211222020193. The next prime is 211222020241. The reversal of 211222020212 is 212020222112.

It is a happy number.

It is a super-2 number, since 2×211222020212² (a number of 23 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 15 ways as a sum of consecutive naturals, for example, 20839898 + ... + 20850030.

It is an arithmetic number, because the mean of its divisors is an integer number (8848806120).

Almost surely, 2^211222020212 is an apocalyptic number.

It is an amenable number.

211222020212 is an abundant number, since it is smaller than the sum of its proper divisors (213520673548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211222020212 is a wasteful number, since it uses less digits than its factorization.

211222020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14120 (or 14118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211222020212 its reverse (212020222112), we get a palindrome (423242242324).

The spelling of 211222020212 in words is "two hundred eleven billion, two hundred twenty-two million, twenty thousand, two hundred twelve".