211222220012 has 24 divisors (see below), whose sum is σ = 402510586800. Its totient is φ = 96602538816.

The previous prime is 211222220003. The next prime is 211222220021. The reversal of 211222220012 is 210022222112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211222220003) and next prime (211222220021).

It is a super-2 number, since 2×211222220012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47915723 + ... + 47920130.

It is an arithmetic number, because the mean of its divisors is an integer number (16771274450).

Almost surely, 2^211222220012 is an apocalyptic number.

It is an amenable number.

211222220012 is a deficient number, since it is larger than the sum of its proper divisors (191288366788).

211222220012 is a wasteful number, since it uses less digits than its factorization.

211222220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95835905 (or 95835903 counting only the distinct ones).

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

Adding to 211222220012 its reverse (210022222112), we get a palindrome (421244442124).

The spelling of 211222220012 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, twelve".