211011000002021 has 8 divisors (see below), whose sum is σ = 212011487438784. Its totient is φ = 210010516672320.

The previous prime is 211011000001993. The next prime is 211011000002039. The reversal of 211011000002021 is 120200000110112.

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-211011000002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211011000001993 and 211011000002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211011000002221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166973501 + ... + 168232493.

It is an arithmetic number, because the mean of its divisors is an integer number (26501435929848).

Almost surely, 2^{211011000002021} is an apocalyptic number.

It is an amenable number.

211011000002021 is a deficient number, since it is larger than the sum of its proper divisors (1000487436763).

211011000002021 is a wasteful number, since it uses less digits than its factorization.

211011000002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053531.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211011000002021 its reverse (120200000110112), we get a palindrome (331211000112133).

The spelling of 211011000002021 in words is "two hundred eleven trillion, eleven billion, two thousand, twenty-one".