2111220033312 has 96 divisors (see below), whose sum is σ = 6035316013440. Its totient is φ = 642307184640.

The previous prime is 2111220033227. The next prime is 2111220033379. The reversal of 2111220033312 is 2133300221112.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9392764 + ... + 9614907.

It is an arithmetic number, because the mean of its divisors is an integer number (62867875140).

Almost surely, 2^{2111220033312} is an apocalyptic number.

It is an amenable number.

2111220033312 is an abundant number, since it is smaller than the sum of its proper divisors (3924095980128).

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

2111220033312 is a wasteful number, since it uses less digits than its factorization.

2111220033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19007786 (or 19007778 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2111220033312 its reverse (2133300221112), we get a palindrome (4244520254424).

The spelling of 2111220033312 in words is "two trillion, one hundred eleven billion, two hundred twenty million, thirty-three thousand, three hundred twelve".