2211021221112 has 128 divisors (see below), whose sum is σ = 6728821632000. Its totient is φ = 667130699520.

The previous prime is 2211021221077. The next prime is 2211021221179. The reversal of 2211021221112 is 2111221201122.

2211021221112 is a `hidden beast` number, since 221 + 10 + 212 + 211 + 12 = 666.

It is a super-2 number, since 2×2211021221112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 1443312 + ... + 2550527.

It is an arithmetic number, because the mean of its divisors is an integer number (52568919000).

Almost surely, 2^{2211021221112} is an apocalyptic number.

2211021221112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2211021221112 is an abundant number, since it is smaller than the sum of its proper divisors (4517800410888).

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

2211021221112 is a wasteful number, since it uses less digits than its factorization.

2211021221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994098 (or 3994088 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211021221112 its reverse (2111221201122), we get a palindrome (4322242422234).

The spelling of 2211021221112 in words is "two trillion, two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, one hundred twelve".