2111221020312 has 48 divisors (see below), whose sum is σ = 5872427845440. Its totient is φ = 684720330048.

The previous prime is 2111221020301. The next prime is 2111221020317. The reversal of 2111221020312 is 2130201221112.

2111221020312 is a `hidden beast` number, since 2 + 111 + 221 + 0 + 20 + 312 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111221020317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396247528 + ... + 396252855.

It is an arithmetic number, because the mean of its divisors is an integer number (122342246780).

Almost surely, 2^{2111221020312} is an apocalyptic number.

It is an amenable number.

2111221020312 is an abundant number, since it is smaller than the sum of its proper divisors (3761206825128).

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

2111221020312 is a wasteful number, since it uses less digits than its factorization.

2111221020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792500432 (or 792500425 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2111221020312 its reverse (2130201221112), we get a palindrome (4241422241424).

The spelling of 2111221020312 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, twenty thousand, three hundred twelve".