211101011220012 has 144 divisors (see below), whose sum is σ = 511955708439168. Its totient is φ = 67694854556160.

The previous prime is 211101011219993. The next prime is 211101011220013. The reversal of 211101011220012 is 210022110101112.

It is a happy number.

It is a super-2 number, since 2×211101011220012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211101011219973 and 211101011220000.

It is not an unprimeable number, because it can be changed into a prime (211101011220013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 915696463 + ... + 915926969.

It is an arithmetic number, because the mean of its divisors is an integer number (3555247975272).

Almost surely, 2^{211101011220012} is an apocalyptic number.

It is an amenable number.

211101011220012 is an abundant number, since it is smaller than the sum of its proper divisors (300854697219156).

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

211101011220012 is a wasteful number, since it uses less digits than its factorization.

211101011220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231216 (or 231177 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211101011220012 its reverse (210022110101112), we get a palindrome (421123121321124).

The spelling of 211101011220012 in words is "two hundred eleven trillion, one hundred one billion, eleven million, two hundred twenty thousand, twelve".