211120211021 has 8 divisors (see below), whose sum is σ = 212682771840. Its totient is φ = 209558274912.

The previous prime is 211120210991. The next prime is 211120211047. The reversal of 211120211021 is 120112021112.

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-211120211021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211120210987 and 211120211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120211321) 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, 533441 + ... + 840713.

It is an arithmetic number, because the mean of its divisors is an integer number (26585346480).

Almost surely, 2^211120211021 is an apocalyptic number.

It is an amenable number.

211120211021 is a deficient number, since it is larger than the sum of its proper divisors (1562560819).

211120211021 is a wasteful number, since it uses less digits than its factorization.

211120211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312355.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211120211021 its reverse (120112021112), we get a palindrome (331232232133).

The spelling of 211120211021 in words is "two hundred eleven billion, one hundred twenty million, two hundred eleven thousand, twenty-one".