211011221112 has 32 divisors (see below), whose sum is σ = 541785570000. Its totient is φ = 68436071424.

The previous prime is 211011221101. The next prime is 211011221119. The reversal of 211011221112 is 211122110112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211011221091 and 211011221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118811737 + ... + 118813512.

Almost surely, 2^211011221112 is an apocalyptic number.

It is an amenable number.

211011221112 is an abundant number, since it is smaller than the sum of its proper divisors (330774348888).

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

211011221112 is a wasteful number, since it uses less digits than its factorization.

211011221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237625295 (or 237625291 counting only the distinct ones).

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

Adding to 211011221112 its reverse (211122110112), we get a palindrome (422133331224).

It can be divided in two parts, 2110112 and 21112, that multiplied together give a palindrome (44548684544).

The spelling of 211011221112 in words is "two hundred eleven billion, eleven million, two hundred twenty-one thousand, one hundred twelve".