2111222012112 has 80 divisors (see below), whose sum is σ = 6065756340160. Its totient is φ = 703070928000.

The previous prime is 2111222012089. The next prime is 2111222012149. The reversal of 2111222012112 is 2112102221112.

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 15 ways as a sum of consecutive naturals, for example, 1870939 + ... + 2779002.

It is an arithmetic number, because the mean of its divisors is an integer number (75821954252).

Almost surely, 2^{2111222012112} is an apocalyptic number.

It is an amenable number.

2111222012112 is an abundant number, since it is smaller than the sum of its proper divisors (3954534328048).

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

2111222012112 is a wasteful number, since it uses less digits than its factorization.

2111222012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651009 (or 4650997 counting only the distinct ones).

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

Adding to 2111222012112 its reverse (2112102221112), we get a palindrome (4223324233224).

The spelling of 2111222012112 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred twelve".