2011112221021 has 8 divisors (see below), whose sum is σ = 2016631387584. Its totient is φ = 2005598750400.

The previous prime is 2011112221003. The next prime is 2011112221051. The reversal of 2011112221021 is 1201222111102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011112221021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011112220986 and 2011112221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011112221051) 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, 716380 + ... + 2129653.

It is an arithmetic number, because the mean of its divisors is an integer number (252078923448).

Almost surely, 2^{2011112221021} is an apocalyptic number.

It is an amenable number.

2011112221021 is a deficient number, since it is larger than the sum of its proper divisors (5519166563).

2011112221021 is a wasteful number, since it uses less digits than its factorization.

2011112221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847971.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2011112221021 its reverse (1201222111102), we get a palindrome (3212334332123).

The spelling of 2011112221021 in words is "two trillion, eleven billion, one hundred twelve million, two hundred twenty-one thousand, twenty-one".