211211201112 has 64 divisors (see below), whose sum is σ = 546623616000. Its totient is φ = 67937339520.

The previous prime is 211211201101. The next prime is 211211201167. The reversal of 211211201112 is 211102112112.

It is a happy number.

It is a super-2 number, since 2×211211201112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211201091 and 211211201100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147058 + ... + 666369.

It is an arithmetic number, because the mean of its divisors is an integer number (8540994000).

Almost surely, 2^211211201112 is an apocalyptic number.

It is an amenable number.

211211201112 is an abundant number, since it is smaller than the sum of its proper divisors (335412414888).

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

211211201112 is a wasteful number, since it uses less digits than its factorization.

211211201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813816 (or 813812 counting only the distinct ones).

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

Adding to 211211201112 its reverse (211102112112), we get a palindrome (422313313224).

The spelling of 211211201112 in words is "two hundred eleven billion, two hundred eleven million, two hundred one thousand, one hundred twelve".