211040102021 has 8 divisors (see below), whose sum is σ = 241195479360. Its totient is φ = 180886422528.

The previous prime is 211040102011. The next prime is 211040102057. The reversal of 211040102021 is 120201040112.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-211040102021 is a prime.

It is a super-2 number, since 2×211040102021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211040101987 and 211040102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211040102011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145916 + ... + 665861.

It is an arithmetic number, because the mean of its divisors is an integer number (30149434920).

Almost surely, 2^211040102021 is an apocalyptic number.

It is an amenable number.

211040102021 is a deficient number, since it is larger than the sum of its proper divisors (30155377339).

211040102021 is an equidigital number, since it uses as much as digits as its factorization.

211040102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848923.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211040102021 its reverse (120201040112), we get a palindrome (331241142133).

The spelling of 211040102021 in words is "two hundred eleven billion, forty million, one hundred two thousand, twenty-one".