211222111210212 has 96 divisors (see below), whose sum is σ = 508955473281024. Its totient is φ = 68108657040000.

The previous prime is 211222111210189. The next prime is 211222111210277. The reversal of 211222111210212 is 212012111222112.

It is a super-2 number, since 2×211222111210212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13826143518 + ... + 13826158794.

It is an arithmetic number, because the mean of its divisors is an integer number (5301619513344).

Almost surely, 2^{211222111210212} is an apocalyptic number.

It is an amenable number.

211222111210212 is an abundant number, since it is smaller than the sum of its proper divisors (297733362070812).

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

211222111210212 is a wasteful number, since it uses less digits than its factorization.

211222111210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27889 (or 27887 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211222111210212 its reverse (212012111222112), we get a palindrome (423234222432324).

The spelling of 211222111210212 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred ten thousand, two hundred twelve".